Question

What would the vaule of y be when x=-2

Answer 1

Explanation:

Formula for direct variation is y=kx, where k represents the constant. So, we solve for "k" first given the "x" and "y" variables.

Read "y varies directly as x" when y=2, x=10:

2 = k(10)

2 = k(10)

10 10

1

5 = k

Now that you found "k" you can substitute that into equation with the other given variables:

y = (1/5)(-25)= -5

Answer 2

=1

The value of y varies directly with x, and y=1 when x=2.