6. Ashley
7. Points are represented by (x, y). Therefore, when proving that your answer is correct, you are to plug in the points into the corresponding values. With this problem, the original function was f(x) = -16x^2 + 96x
f(x) always means y, which means that whenever you plug in x into the other side of the function, you should get -112 because that is the y value in your given point. Ashley is correct because she plugged in -1 wherever x was in the function. In equations, solving the exponent comes before multiplying any numbers together, which is what she did: she squared the -1 and got 1. Now the equation reads to be -16(1)+96(-1)
-16 times 1 is just -16, and 96 times -1 is just -96, therefore when she added -16 and -96 together, she got -112, which is what she should’ve gotten since we were looking for the y value. That is why Ashley is correct.
