# help please with this question

label Algebra
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Find a formula for the quadratic function whose graph has vertex  and y-intercept .

Nov 10th, 2014

 Find a formula for the quadratic function whose graph has vertex(2,-2) and y-intercept of -5
Find a formula for the quadratic function whose graph has vertex(2,-2) and y-intercept of -5
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standard form of equation for a parabola:

, (h,k)=(x,y) coordinates of the vertex

For given parabola:

solve for A using coordinates of y-intercept (0,-5)
-5=A(0-2)^2-2
-5=4A-2
4A=-3
A=-3/4
equation of given quadratic function:

Source: http://www.algebra.com/algebra/homework/quadratic/Quadratic_Equations.faq.question.657773.html

Nov 10th, 2014

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Nov 10th, 2014
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Nov 10th, 2014
Nov 22nd, 2017
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