Direct Variation

Identify which equations show direct variation and which do not.

The graph of a direct varation equation will always pass through the origin. ​ (a)  

What does "k" stand for in the direct variation equation?

Does the graph show a direct variation?

n varies directly with c. If c = 24 when n = 18, what is c when n = 22?

Y varies directly as x. If y = 12 when x = 15, what is y when x = 20?

Which of the given graphs is a direct variation?

In a direct variation, y = 39 when x = 3. 
Find the value of y when x = 2.

The amount of money earned on a job is directly proportional to the number of hours worked. If $240 is earned in 16 hours, how much money is earned in a 40-hour work week?

Create the graph for the direct variation equation $$y=3x$$