Question

Suppose y varies directly with x. Write a direct variation equation that relates x and y
Y=10 when x=2

A. Y=-5x
B. Y=-1/5
C. Y=5x
D. Y=1/5x

Answer 1

the correct answer is option C

Answer 2

Answer:

C

Step-by-step explanation:

Given that y varies directly with x then the equation relating them is

y = kx ←  k is the constant of variation

To find k use the condition that y = 10 when x = 2, thus

k = $\frac{y}{x}$ = $\frac{10}{2}$ = 5 , thus

y = 5x ← equation of variation → C