Question

Suppose y varies directly as x, and y= 2 when x= 4. Which of the following statements is true?
The constant of variation is 2.
The constant of variation is 1/2 .
The constant of variation is 4.
The constant of variation is -4.

Answer 1

y = kx where k is a constant (direct variation)
y is 2 when x = 4, so
2 = 4k
can you continue?

Answer 2

That would make the constant of variation be 1/2
Thank you(:

Answer 3

ok