Question

If y varies directly as x, and y is 20 when x is 4, what is the constant of variation for this relation?

Answer 1

C , 5

Explanation:

Answer 2

y
y=ax
where a is a constant of proportionality;
y=20, x=4
20=4a
a=20/4
a=5
y=5x
The constant of variation is 5