SOLUTION: Please Help! Given the function f(x) = -3x2 - 6x - 6, is the point (-1, -3) on the graph of f? Yes or No

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Question 966385: Please Help!
Given the function f(x) = -3x2 - 6x - 6, is the point (-1, -3) on the graph of f?
Yes or No
Answer by ramkikk66(644) About Me  (Show Source):
You can put this solution on YOUR website!
Given the function f(x) = -3x2 - 6x - 6, is the point (-1, -3) on the graph of f? 

f(x) = -3%2Ax%5E2+-+6%2Ax+-+6

A point (x,y) is on the graph of f if and only if for the given value of x, f(x) = y.

For the point (-1,-3), x = -1, y = -3.
f(x) = f(-1) = +-3+%2A+%28-1%29%5E2+-+6%2A+%28-1%29+-+6 = +-3+%2B6+-6+=+-3
so f(x) = y.
Therefore the point (-1,-3) is on the graph of f. Ans is Yes.

Hope you got it!