javontiye226
25.06.2019 •
Mathematics
Find the vertex equation form,f(x)=a(x-h)^2+k,for a parabola that passes through the point(-6,9)and has(-5,8)as it’s vertex.what is the standard form of the equation
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Ответ:
y = 1(x+5)^2 + 8 and y = x^2 + 10x + 33
Step-by-step explanation:
Find the vertex equation form (f(x)=a(x-h)^2+k for a parabola that passes through the point (-6,9) and has (-5,8) as its vertex.
First, substitute the given coordinates of the vertex into this equation:
f(x) = a(x+5)^2 + 8.
Next, subst. the coordinates of the point (-6, 9) into the above:
9 = a(-6+5)^2 + 8, or 9 = a + 8. Then a = 1.
We thus have the vertex equation y = 1(x+5)^2 + 8.
What is the standard form of the equation? Expand the vertex equation as follows: y = x^2 + 10x + 25 + 8, or y = x^2 + 10x + 33
Ответ: