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

Answer:
y = 5x
Step-by-step 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