Question

3. Is the ordered pair (-1, 7) a solution to the equation 7x + y = y- 7? Show
your work.

Answer 1

Yes

Explanation:

substitute the ordered pair into ya equation.

7x + y = y - 7; (-1,7)

7(-1) + 7 = 7 -7

multiply 7 and -1, add 7 and -7

-7 + 7 = 0

add -7 and 7

0 = 0.

So yes, the ordered pair (-1, 7) works in this equation