Question 1

The ordered pair (3, -4) satisfies the equation y =  3 x + 5.

Accepted Answer

A) True 
 B)False

Question 2

True or false? The indicated graph represents a function of x .

Accepted Answer

A) True 
 B)False

Question 3

Find the equation of the line that contains the two given points. Express the equation in the form  , where A , B , and C are integers.

Accepted Answer

The answer of Find the equation of the line that...

Question 4

Find the equation of the line that contains the given point and has the given slope.

Accepted Answer

A)   
B)   
C)   
D)   
E)

Question 5

Find the slope of the line determined by this pair of points. (1.7, 5.7), (11.7, 14.7)

Accepted Answer

A)   
B)   
C)   
D)   
E)

Question 6

Graph a line given the point-slope form of an equation.

Accepted Answer

A)   
B)   
C)   
D)

Question 7

Complete the table.

Accepted Answer

A)    
B)    
C)    
D)

Question 8

The graph below shows how the path of a stream of water changes when the hose is held at two different angles. The stream shot up higher at the  angle.

Accepted Answer

A) True 
 B)False

Question 9

Assume that all variables represent positive numbers. Assume that  varies jointly with  and  . If  when  and  , find  when  and  .

Accepted Answer

A)   
B)   
C)   
D)   
E)

Question 10

Specify the domain for the relation. { ( x , y ) | 9 x 2 = 5 y 3 }

Accepted Answer

A)   
B)   
C)   
D)   
E)

Question 11

Find the equation of the line that contains the given point and has the given slope. Express equation in the form  , where A , B , and C are integers.

Accepted Answer

The answer of Find the equation of the line that...

Question 12

Graph the line that passes through the given point and has the given slope.

Accepted Answer

A)   
B)   
C)   
D)   
E)

Question 13

Find the slope of the line determined by this pair of points. (1, -6), (9, -6) slope = __________

Accepted Answer

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

Question 14

In the problem described below, assume that the relationship can be expressed as a linear equation in two variables, and use the given information to determine the equation. Express the equation in slope-intercept form. A new diet fad claims that a person weighing 170 pounds should consume 1,420 daily calories and that a 210-pound person should consume 1,600 calories. Let y represent the calories and x the weight of the person in pounds.

Accepted Answer

A)   
B)   
C)   
D)   
E)

Question 15

The charges for renting a CD are shown in the graph. Find the charge if the CD is kept for 7 days.

Accepted Answer

A)  $7 
B)  $6 
C)  $3 
D)  $5 
E)  $4

Question 16

Use point-slope form to write an equation of the given line. Solve each equation for  .

Accepted Answer

A)   
B)   
C)   
D)

Question 17

The volume of a rectangular solid varies jointly with its length, width, and height. If the length is tripled, the width is tripled, and the height is quadrupled, by what factor is the volume multiplied?

Accepted Answer

A)  3 
B)  23 
C)  9 
D)  36

Question 18

If the rise of the roof shown in the illustration is 5 feet, and the run is 9 feet, find the pitch of the roof.

Accepted Answer

A)   
B)  45 
C)   
D)  14 
E)

Exam 3: Graphs; Equations of Lines; Functions; Variation

The ordered pair (3, -4) satisfies the equation y = 3 x + 5.

True or false? The indicated graph represents a function of x .

Find the equation of the line that contains the two given points. Express the equation in the form , where A , B , and C are integers.

Find the equation of the line that contains the given point and has the given slope.

Find the slope of the line determined by this pair of points. (1.7, 5.7) , (11.7, 14.7)

Graph a line given the point-slope form of an equation.

Complete the table.

The graph below shows how the path of a stream of water changes when the hose is held at two different angles. The stream shot up higher at the angle.

Assume that all variables represent positive numbers. Assume that varies jointly with and . If when and , find when and .

Specify the domain for the relation. { ( x , y ) | 9 x ²= 5 y ³ }

Find the equation of the line that contains the given point and has the given slope. Express equation in the form , where A , B , and C are integers.

Graph the line that passes through the given point and has the given slope.

Find the slope of the line determined by this pair of points. (1, -6), (9, -6) slope = __________

The charges for renting a CD are shown in the graph. Find the charge if the CD is kept for 7 days.

Use point-slope form to write an equation of the given line. Solve each equation for .

The volume of a rectangular solid varies jointly with its length, width, and height. If the length is tripled, the width is tripled, and the height is quadrupled, by what factor is the volume multiplied?

If the rise of the roof shown in the illustration is 5 feet, and the run is 9 feet, find the pitch of the roof.