SOLUTION: Graph Each Function and give the approximate coordinates of the vertex. 41. f(x)=x^2-x+9

Question 67676This question is from textbook Algebra 2
: Graph Each Function and give the approximate coordinates of the vertex.
41. f(x)=x^2-x+9 This question is from textbook Algebra 2

Answer by tutorcecilia(2152) (Show Source): You can put this solution on YOUR website!
f(x)=x^2-x+9
x=-(A/B) [formula for the x-value of the vertex]
x=-(1/-1)=1
f(x)=(1)^2-(1)+9 [plug-in x=1 and solve for f(x) or y]
f(1)=1-1+9
f(1)=9
So, the vertex is (1, 9)
.
Graphing:

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