3B Rate of Change Exam Review

Which best describes the slope of the line?

• positive

• Negative

• 0

• Undefined

What is the slope of the line?

• -2

• $-\frac{1}{2}$

• $\frac{1}{2}$

• 2

What are the coordinates of the y-intercept of the line?

• (4,0)

• (0.4)

• (2,0)

• (0,2)

What are the coordinates of the x-intercept of the line?

• (4,0)

• (0.4)

• (2,0)

• (0,2)

What is the slope of a line that passes through the points (5,-3) and (2,-1)?

• $-\frac{3}{4}$

• $-\frac{3}{2}$

• $-\frac{2}{3}$

• $\frac{4}{3}$

What is the slope of a line that passes through the points (-2,4) and (3,4)?

• -5

• -1

• 0

• The slope is undefined

When graphed on a grid, a road contains the points (5,4) and (80,7). What is the grade of the road?

• 2%

• 3%

• 4%

• 5%

Mr. Z is starting his own car club, there is a $30 join up fee and a $5 monthly fee. What is the rate of change?

• 30

• 5

What is the rate of change in the following equation: y = - 4x - 5 ?

• - 4

• - 4x

• 5

• - 5

A man is climbing down from 100 feet high descending 30 feet per minute. What is the rate of change?

• -30

• 30

• 100

• -100