Direct Variation Review

Based on this graph, which of the following are true? Select all that apply.

• This graph is a proportional relationship because it is linear and reaches (0,0).

• The unit rate is 10 meters per second.

• The direct variation equation is y = 10x.

• According to this graph, the object would travel 60 meters in 60 seconds.

• x = 13.5

• x = -108

• x = 1.5

• x = 3

Sheryl walks at a steady pace. Which equation represents her total time spent walking depending on the number of miles she walks at that pace?

• y = x + 13

• k = 65/5

• y = 13x

Q1. What is the result of 8 + 4?

• 8

• 9

• 72

• 12

Q1. How many legs does a spider have?

• 9

• 12

• 18

• 1

The amount of money earned on a job is directly proportional to the number of hours worked.  If $70.00 is earned in 5 hours, how much money is earned in 22 hours of work?

• $2

• $308

• $1.57

• $265

Trina's paycheck earnings varies directly as the number of hours she works. If she works 19 hours and earns $187.15, what should she earn if she worked 40 hours?

• $394

• $440

• $472.80

• $512.20

A person’s weekly pay is directly proportional to the number of hours worked. Shawn’s pay is $123.00 for 20 hours of work. Find the amount of pay for 31 hours of work. 

• $3813

• $620

• $190.65

• $4.96

Write an equation for this relationship.

• y=4x

• y=1/8x

• y=1/4x

• y=8x

Write the equation for the table given.

• y = 1/3x

• y = 3x

• y = 1/2x