Question

Write and Y varies directly as x. y 20 when x graph the direct variation function.

Answer 1

y = 5x

Explanation:

20 = 5(4)

20 = 20

Since they directly vary, this is a linear equation, and the slope is 5.

y = mx + b

y = 5x + b

20 = 20 + b

b = 0

So the equation is

y = 5x