SOLUTION: Having already submitted one question, there is another along the same line I find equally confusing: Given the function f(x)= -7x^2 -14x +9, is the point (-2, -5) on the graph

Question 48379This question is from textbook
: Having already submitted one question, there is another along the same line I find equally confusing:
Given the function f(x)= -7x^2 -14x +9, is the point (-2, -5) on the graph of f?
Does the y=mx+b formula apply here, I just don't know, any help will be greatly appreciated This question is from textbook

Answer by Earlsdon(6294) (Show Source): You can put this solution on YOUR website!
Does the point (-2, -5) lie on the graph of ?
Write your function in the form:
and substitute x = -2, and y = -5 and see if the two sides are equal.
Simplify.

Not true!
The point (-2, -5) does not lie on the graph of
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