Question

If `y=3x-7, 3y=kx-21` are equivalent linear equations, what is the value of k?

Answer 1

`k=9`

Explanation:

Let's place the equations side by side in slope-intercept form:
First one: `y=3x-7`
The second one we will have to get in slope intercept:
`3y=kx-21`
`y=(kx)/3-7`

So therefore:
`k/3=3`
`k=9`