Question 1

Solve the formula for the specified variable.
-Solve: D =  (mx - mb) for m

Accepted Answer

A)   
B)   
C)   
D)

Question 2

Write an equation of the line with the indicated slope and y intercept.
-

Accepted Answer

A)   
B)   
C)   
D)

Question 3

Write an equation of the line with the indicated slope and y intercept.
-Slope = 1; y intercept = 1

Accepted Answer

A)  y = -x + 1 
B)  y = 1x - 1 
C)  y = x + 1 
D)  y = 1x + 1

Question 4

Write the slope-intercept equation (y = mx + b) for a line with the given characteristics.
-m = - 4, y-intercept (0, -7)

Accepted Answer

A)  y = - 4x 
B)  y = - 4x - 7 
C)  y = - 7x - 4 
D)  4x + y = - 7

Question 5

Find the slope and y intercept of the graph of the equation.
-y = 3x - 6

Accepted Answer

A)  Slope = 6, y intercept = 3 
B)  Slope = 3, y intercept = 6 
C)  Slope = 3, y intercept = -6 
D)  Slope = -6, y intercept = 3

Question 6

Use the REGRESSION feature on a graphing calculator.
-For some reason the quality of production decreased as the year progressed at a flash drive manufacturing plant. The following data represent the percentage of defective flash drives produced at the plant in the
Corresponding month of the year.  Use the regression equation with values rounded to four decimals to predict the percentage of defective drives in month
6, June.

Accepted Answer

A)  2.0% 
B)  2.20% 
C)  2.3% 
D)  2.15%

Question 7

Provide an appropriate response.
-Find the standard form of the equation of the line passing through the two points. (2, - 6) and (- 9, 6)

Accepted Answer

A)  12x + 11y = - 42 
B)  - 8x + 15y = - 18 
C)  8x - 15y = - 18 
D)  - 12x + 11y = - 42

Question 8

Write an equation of the line with the indicated slope and y intercept.
-

Accepted Answer

A)   
B)   
C)   
D)

Question 9

Solve the problem.
-You have $50,000 and wish to invest part at 10% and the rest at 6%. How much should be invested at each rate to produce the same return as if it all had been invested at 9%?

Accepted Answer

A)  $37,000 at 10%, $13,000 at 6% 
B)  $37,500 at 10%, $12,500 at 6% 
C)  $37,500 at 6%, $12,500 at 10% 
D)  $37,000 at 6%, $13,000 at 10%

Question 10

Graph the linear equation and determine its slope, if it exists.
-

Accepted Answer

A)   
B)   
C)   
D)

Question 11

Write an equation of the line with the indicated slope and y intercept.
-

Accepted Answer

A)   
B)   
C)   
D)

Exam 1: Functions and Graphs

Solve the formula for the specified variable. -Solve: D = (mx - mb) for m

Write an equation of the line with the indicated slope and y intercept. -

Write an equation of the line with the indicated slope and y intercept. -Slope = 1; y intercept = 1

Write the slope-intercept equation (y = mx + b) for a line with the given characteristics. -m = - 4, y-intercept (0, -7)

Find the slope and y intercept of the graph of the equation. -y = 3x - 6

Provide an appropriate response. -Find the standard form of the equation of the line passing through the two points. (2, - 6) and (- 9, 6)

Write an equation of the line with the indicated slope and y intercept. -

Solve the problem. -You have $50,000 and wish to invest part at 10% and the rest at 6%. How much should be invested at each rate to produce the same return as if it all had been invested at 9%?

Graph the linear equation and determine its slope, if it exists. -

Write an equation of the line with the indicated slope and y intercept. -