Using quadratic function concepts, it is found that Abby made a mistake on the coordinates of the vertex, which are (-4,1).
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- A quadratic function is defined by:

- The y-intercept is given by point:

- The vertex is given by:
. - The axis of symmetry is:

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The function given is:

- Which is a quadratic equation with:
.
, thus, the y-intercept is (0, -15).

- Thus, the <u>x-coordinate of the vertex</u> is x = -4, which is the same as the <u>axis of symmetry</u>.

- The vertex is given by: (-4,1).
A similar problem is given at brainly.com/question/14680175
-14x - 7y = -35
14x + 7y = 35
answer is inconsistent solutions
Well standard form is Ax+By=C, so just move the -7x to the front so -7x+47=16
Answer:
762
Step-by-step explanation: