Question

Write the direct variation equation for the given table.

(y=kx)

Answer 1

Let's solve for k.

y=kx

Step 1: Flip the equation.

kx=y

Step 2: Divide both sides by x.

kx

x

=

y

x

k=

y

x

Answer:

k=

y

x

Explanation:

Answer 2

Step 1: make one side only k
kx/x=y/x
k=y/x
Step 2: plug in the numbers
The ratio of x to y is 7:1
k= 1/7
Step three: Go back to the normal equation and plug in the new number
y= 1/7 • 7
y= 1

I hope I haven’t completely messed up on this