If (a, -12) is a point on the graph of y=x^2-7x, what is a?

If so, you can insert that y = -12 and solve for a which will equate to x.

So a could be 3 or 4 (has two solutions).

Hope this helps.

step-by-step explanation:

given perimeter: 28cm

length: 9cm

atp,

2(l+w)=p of the reactangle

2(9+x)=28

18+2x=28

2x=28-18

x=10/2

x=5

therefore width is 5 cm

-2x + 7 = 7

subtract 7 from both sides.

-2x = 0

divide both sides by -2.

x = 0