Mid-Unit 3 Review - Algebra 1

Match the following equations with their slopes.

• y = -21x

• -21

• y = 5

• 1

• x = 7

• 0

• y = x + 3

• Undefined

What is the y-intercept of the equation y = -13 - 8x ?

• -13

• -8

• 0

• 8

If the value of y is directly proportional to x, and y = 12 when x = 144, what is y when x = 48? The value of y is​ ​ (a)  

• 6
• 8
• 10
• 4
• 192

Find the rate of change for the points (4, -16) and (4, 47).

• 0

• Undefined

• 1

• -1

Find the rate of change for the points (-3, -1) and (3, -1).

• 0

• 1

• -1

• Undefined

The equation of a line with a slope of 0 is (a)  

• y = c
• x = c
• y = mx + b
• x = my + b

What is the y-intercept of the equation y = 7x ?

• 0

• 7

• -7

• 1

What is the slope of a vertical line?

• 0

• Undefined

• 1

• -1

The equation of a line with a slope of 7 and a y-intercept of 0 is (a)  

• y = 7x
• y = 7
• y = x + 7
• y = 0

Match the following equations with their y-intercepts.

• y = -21

• 21

• x = 5

• 0

• y = 21

• Undefined

• y = x

• -21