Module 4 Quiz

This table shows a proportional relationship.

Which ordered pair could also belong to this relationship?

• (-6,21)

• (-1,-3)

• (1,3)

• (6,21)

Which line has a slope of  $\frac{1}{2}$  and a negative y-intercept?

• Line A

• Line B

• Line C

• Line D

Use this situation for question 3 and 4.

On a two-week job, a repairman works a total of 70 hours. He charges $75 plus $40 per hour. An equation shows this relationship, where x is the number of hours and y is the total fee.

3. Which number is the slope of the line shown by the equation?

• 14

• 40

• 70

• 75

Tags

CCSS.7.RP.A.2D

Use this situation for question 3 and 4.

On a two-week job, a repairman works a total of 70 hours. He charges $75 plus $40 per hour. An equation shows this relationship, where x is the number of hours and y is the total fee.

4. Which number is the y-intercept?

• 14

• 40

• 70

• 75

Which statement cannot be true of the graph of a proportional relationship?

• It is not linear.

• It is a straight line.

• It includes the origin.

• It shows a constant ratio.

Which equation shows a proportional relationship?

• $y=\frac{1}{2\ }x\ -\ \frac{1}{2}$

• $y\ =\ 2x\ -2$

• $y\ =\ \frac{1}{2}x$

• $y\ =\frac{2}{x}$

These two lines are graphs of nonproportional relationships. What makes them nonproportional?

• They are not straight

• They are not linear.

• They do not go through the origin.

• They do not show a constant ratio.

What is 3.4 million in scientific notation?

• $3.4\ \times10^6$

• $3.4\ \times10^7$

• $34\times10^{-1}$

• $34\times10^2$

The equation  $y=-\frac{4}{3}x\ +2$  

• The slope is 2 and the y-intercept is  $-\frac{4}{3}$   

• The slope is  $-\frac{4}{3}$  and the y-intercept is 2
  

Which lines show linear relationships?

• All the lines are proportional

• All the lines are linear

• Lines B, C, and D are linear

• Line B is proportional