Question

15 point!!!!!!!!!!! help asap!!!!!thanks in advanced

Answer 1

Answer: 7x-y= -13

Step-by-step explanation: If you plug in x and y into the equations the only one that works is the first one

Answer 2

It looks to me like you have to answer A

Explanation:

Just take simple steps. When x = 0 then y = 13. That means that part of the equation is

y = mx + 13

Look at the next entry

x = 3 then the new total (y) = 34

y = m*3 + 13

34 = 3m + 13

34 - 13 = 3m

21 = 3m

21 / 3 = m

m = 7

So the correct equation is

y = 7x + 13

Which one is that?

If you take A you get

7x - y = - 13 Subtract 7x from both sides.

- y = -7x - 13 Multiply through by - 1

-1 * - y = -1 * - 7x + -1 * -13

y = 7x + 13 which is exactly what you need.