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

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


   

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) About Me  (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:
+graph%28+300%2C+200%2C+-5%2C+5%2C+-2%2C+12%2C+x%5E2-x%2B9%29+