Question

What is the direct variation equation for the table of ordered pairs?

X Y
20 24
30 36
40 48

Answer 1

its actually 0.8x

Explanation:

im saying this for future people

Answer 2

The equation for the direct variation is y = 1.2x

In order to find this, we start with the base for any direct variation equation.

y = kx.

Now we use the ordered pairs to find the value of k to model the equation.

y = kx

24 = k(20)

1.2 = k

Now that we know this, we can model the equation as y = 1.2x and test for the other values --- each of which work in the newly written equation.