Question 1

z varies jointly with x and the square of y . If z is 54 when x and y are 3, find z when x = 2 and y = 6. z = __________

Accepted Answer

The answer of z varies jointly with x and the...

Question 2

r is inversely proportional to s . If r is 5 when s is 4, find s when r is 100.

Accepted Answer

The answer of r is inversely proportional to s ....

Question 3

Let   and   . Find the function   .

Accepted Answer

A)    
B)    
C)    
D)    
E)    
A)    
B)    
C)    
D)    
E)

Question 4

Let   and   Evaluate

Accepted Answer

A)    
B)    
C)    
D)    
E)    
A)    
B)    
C)    
D)    
E)

Question 5

Let   Evaluate

Accepted Answer

A)    
B)    
C)    
D)    
E)    
A)    
B)    
C)    
D)    
E)

Question 6

y varies directly with x . If y is - 24 when x is 4, find x when y is - 42. x = __________

Accepted Answer

The answer of y varies directly with x . If...

Question 7

Find the slope of the line through the pair of points (- 2, - 6) and (2, 3). Then, plot the points, draw a line through them, and indicate the rise and run on the graph.

Accepted Answer

A)    
B)    
C)    
D)    
A)    
B)    
C)    
D)

Question 8

Let   and   . Find the function   .

Accepted Answer

A)    
B)    
C)    
D)    
E)    
A)    
B)    
C)    
D)    
E)

Question 9

Write the equation of the line with the slope m = 0 and y -intercept b = 5.

Accepted Answer

The answer of Write the equation of the line with...

Question 10

Which line has a positive slope?

Accepted Answer

A)  A, B, C 
B)  D, B 
C)  A, C 
D)  B, C 
E)  B, C, D 
A)  A, B, C 
B)  D, B 
C)  A, C 
D)  B, C 
E)  B, C, D

Question 11

The length a spring stretches is directly proportional to the force applied. If a force of 5 pounds stretches a spring 2 inches, how much force is necessary to stretch the same spring 13 inches?

Accepted Answer

The answer of The length a spring stretches is directly...

Question 12

The surface area of a hollow cylinder varies jointly with the height and radius of the cylinder. If a cylinder with radius 3 inches and height 9 inches has a surface area of 86 square inches, what is the surface area of a cylinder with radius 8 inches and height 16 inches?

Accepted Answer

The answer of The surface area of a hollow cylinder...

Question 13

Find the slope of the line from the graph.

Accepted Answer

The answer of Find the slope of the line from...

Question 14

The length a spring stretches is directly proportional to the force applied. If a force of 8 pounds stretches a spring 7 inches, how much force is necessary to stretch the same spring 12 inches?

Accepted Answer

A)    
B)    
C)    
D)    
E)    
A)    
B)    
C)    
D)    
E)

Question 15

Let   and   Evaluate     __________

Accepted Answer

The answer of Let   and   Evaluate...

Question 16

Let   Evaluate   g (- 3) = __________

Accepted Answer

The answer of Let   Evaluate   g...

Question 17

For the following relation, give the domain and range and indicate whether it is a function. {(4, - 5), (- 1, 7), (4, 2)}

Accepted Answer

A)  Domain = {5, - 1}; Range = {- 1, 7, 2}; a function 
B)  Domain = {- 1, 7, 2}; Range = {5, - 1}; not a function 
C)  Domain = {4, - 1}; Range = {- 5, 7, 2}; a function 
D)  Domain = {4, - 1}; Range = {- 5, 7, 2}; not a function 
E)  Domain = {- 5, 7, 2}; Range = {4, - 1}; a function 
A)  Domain = {5, - 1}; Range = {- 1, 7, 2}; a function 
B)  Domain = {- 1, 7, 2}; Range = {5, - 1}; not a function 
C)  Domain = {4, - 1}; Range = {- 5, 7, 2}; a function 
D)  Domain = {4, - 1}; Range = {- 5, 7, 2}; not a function 
E)  Domain = {- 5, 7, 2}; Range = {4, - 1}; a function

Question 18

The training heart rate   , in beats per minute, is the resting heart rate plus 60% of the difference between the maximum heart rate   and resting heart rate. Your maximum heart rate is found by subtracting your age   in years from 220. Find the training heart rate function,   , for a person with a resting heart rate of 62 beats per minute. Use this function to find the training heart rate for a 40-year-old person rounded to nearest whole number.

Accepted Answer

A)  145 beats per minute 
B)  133 beats per minute 
C)  66 beats per minute 
D)  200 beats per minute 
E)  139 beats per minute 
A)  145 beats per minute 
B)  133 beats per minute 
C)  66 beats per minute 
D)  200 beats per minute 
E)  139 beats per minute

Question 19

Let   Evaluate

Accepted Answer

A)    
B)    
C)    
D)    
E)    
A)    
B)    
C)    
D)    
E)

Question 20

Find the slope of the line through the pair of points (- 4, 3) and (4, - 3). Then, plot the points, draw a line through them, and indicate the rise and run on the graph.

Accepted Answer

A)    
B)    
C)    
D)    
A)    
B)    
C)    
D)

z varies jointly with x and the square of y . If z is 54 when x and y are 3, find z when x = 2 and y = 6. z = __________

r is inversely proportional to s . If r is 5 when s is 4, find s when r is 100.

Let and . Find the function .

Let and Evaluate

Let Evaluate

y varies directly with x . If y is - 24 when x is 4, find x when y is - 42. x = __________

Find the slope of the line through the pair of points (- 2, - 6) and (2, 3). Then, plot the points, draw a line through them, and indicate the rise and run on the graph.

Let and . Find the function .

Write the equation of the line with the slope m = 0 and y -intercept b = 5.

Which line has a positive slope?

The length a spring stretches is directly proportional to the force applied. If a force of 5 pounds stretches a spring 2 inches, how much force is necessary to stretch the same spring 13 inches?

The surface area of a hollow cylinder varies jointly with the height and radius of the cylinder. If a cylinder with radius 3 inches and height 9 inches has a surface area of 86 square inches, what is the surface area of a cylinder with radius 8 inches and height 16 inches?

Find the slope of the line from the graph.

The length a spring stretches is directly proportional to the force applied. If a force of 8 pounds stretches a spring 7 inches, how much force is necessary to stretch the same spring 12 inches?

Let and Evaluate __________

Let Evaluate g (- 3) = __________

For the following relation, give the domain and range and indicate whether it is a function. {(4, - 5), (- 1, 7), (4, 2)}

Let Evaluate

Find the slope of the line through the pair of points (- 4, 3) and (4, - 3). Then, plot the points, draw a line through them, and indicate the rise and run on the graph.

Notation and Symbols

Simplifying Expressions

Paired Data and Graphing Ordered Pairs

Multiplication With Exponents

The Greatest Common Factor and Factoring by Grouping

Reducing Rational Expressions to Lowest Terms

Review of Solving Equations

Rational Exponents

Completing the Square

Exponential Functions

The Circle

Sequences

Filters

Exam 8: The Slope of a Line

z varies jointly with x and the square of y . If z is 54 when x and y are 3, find z when x = 2 and y = 6. z = __________

r is inversely proportional to s . If r is 5 when s is 4, find s when r is 100.

Let and . Find the function .

Let and Evaluate

Let Evaluate

y varies directly with x . If y is - 24 when x is 4, find x when y is - 42. x = __________

Find the slope of the line through the pair of points (- 2, - 6) and (2, 3). Then, plot the points, draw a line through them, and indicate the rise and run on the graph.

Let and . Find the function .

Write the equation of the line with the slope m = 0 and y -intercept b = 5.

Which line has a positive slope?

The length a spring stretches is directly proportional to the force applied. If a force of 5 pounds stretches a spring 2 inches, how much force is necessary to stretch the same spring 13 inches?

The surface area of a hollow cylinder varies jointly with the height and radius of the cylinder. If a cylinder with radius 3 inches and height 9 inches has a surface area of 86 square inches, what is the surface area of a cylinder with radius 8 inches and height 16 inches?

Find the slope of the line from the graph.

The length a spring stretches is directly proportional to the force applied. If a force of 8 pounds stretches a spring 7 inches, how much force is necessary to stretch the same spring 12 inches?

Let and Evaluate __________

Let Evaluate g (- 3) = __________

For the following relation, give the domain and range and indicate whether it is a function. {(4, - 5), (- 1, 7), (4, 2)}

Let Evaluate

Find the slope of the line through the pair of points (- 4, 3) and (4, - 3). Then, plot the points, draw a line through them, and indicate the rise and run on the graph.

Notation and Symbols

Simplifying Expressions

Paired Data and Graphing Ordered Pairs

Multiplication With Exponents

The Greatest Common Factor and Factoring by Grouping

Reducing Rational Expressions to Lowest Terms

Review of Solving Equations

Rational Exponents

Completing the Square

Exponential Functions

The Circle

Sequences

Filters