SOLUTION: Sketch each quadratic function by algebraically finding the axis of symmetry, vertex, and use a total of at least five points. a. f(x)=x^2+4x+3 b. g(x)=-x^2+8x-15 c. h(x)=x^2-2x

Question 1100207: Sketch each quadratic function by algebraically finding the axis of symmetry, vertex, and use a total of at least five points.
a. f(x)=x^2+4x+3 b. g(x)=-x^2+8x-15 c. h(x)=x^2-2x+3
Answer by josgarithmetic(39617) (Show Source): You can put this solution on YOUR website!
There is a formula to help with this, in case a function is not factorable.

(b)

-
, completing the square

Axis of symmetry, .
Vertex, (-4,-31).
You can find the desired points yourself. You should at least include the two x-intercepts. Solve this equation: .
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