Math 8 Units 5 and 7

Solve for the value of y when x = 3

y = -3x + 5

• y = - 9

• y = - 4

• y = 4

• y = 14

Solve for the value of x:

12 = 2x - 6

• x = - 6

• x = 3

• x = 6

• x = 9

Solve for the value of y when x = -2

y = 5x + 2

• -10

• -8

• 10

• 12

Which of the following point is on the graph for the equation: y = 2x - 6? (substitute x and y coordinates into the equation and determine which is true)

• (1 , 2)

• (2 , 4)

• (3 , 0)

• (4 , -2)

Which points are in the graph for the equation: y = 4x + 3? (Substitute the x and y coordinate into the equation and determine which is true). Select all that apply

• (1 , 7)

• (2 , 11)

• (3 , 12)

• (4 , 19)

Study the graph and answer the following question:

How many times did the graph increase?

• one time

• 2 times

• 3 times

• never increase

Study the graph and answer the following question:

How many times did the graph decrease?

• one time

• 2 times

• 3 times

• never decrease

Which statement is true about the graph?

• The flow rate never reach 10 ml.

• The flow rate of 8 ml appeared two times.

• The lowest flow rate is at 2 ml.

• The flow rate increases once.

What is the rate of change (slope) of the following function:

y = 3x + 5 ?

• 1/3

• 3

• 5

What is the rate of change of the following function?

• 1/4

• 1/3

• 1

• 3