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PLEASE HELP ASAP!!! CORRECT ANSWER ONLY PLEASE!!!

Graph g(x) = 3x^2 - 12x - 3.

PLEASE HELP ASAP!!! CORRECT ANSWER ONLY PLEASE!!! Graph g(x) = 3x^2 - 12x - 3.-example-1
User Jayne Mast
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1 Answer

5 votes

Answer: Vertex (2, -15) 2nd Point (0, -3)

Explanation:

g(x) = 3x² - 12x - 3 ⇒ a=3, b=-12, c=-3

Use the axis of symmetry formula to find the x-value of the vertex:


x=(-b)/(2a)=(-(-12))/(2(3))=(12)/(6)=2

Input thex-value into the given equation to find the y-value:

g(2) = 3(2)² - 12(2) - 3

= 3(4) - 24 - 3

= 12 - 27

= -15

So, the vertex is (2, -15)


For the 2nd point, plot the y-intercept (which is when x = 0) to get (0, -3).


To graph, plot the vertex first and then the 2nd point.

User Raultm
by
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