Question

How would I explain that my equation is has a solution of (-1, 5).
And I already know that it is (-1,5).
y=2x+7
y=x+6

Answer 1

replace x and y in the equation by your solution if both side equal then that is ur right answer

Answer 2

First in, plug it the x value. We know that (-1,5) has the same form of (x,y). So we just need to plug in the x value to evaluate it.
y=2x+7
y=2(-1)+7
y=-2+7
Y=5

y=x=6
y=-1+6
Y-5

Answer 3

you have to substitute one equation into the other hint, y is easier to sub than x is

Answer 4

solve right side
if you get 5 on right side then yes your answer is right