SOLUTION: does this function have a maximum or a minimum? x^2+4x-5=0 or (-5,1) or (-2,-9) and what are the coordinates of the vertex in (x,y) form and what is the equation of the line

Algebra.Com
Question 140900: does this function have a maximum or a minimum?
x^2+4x-5=0
or
(-5,1)
or
(-2,-9)
and what are the coordinates of the vertex in (x,y) form and what is the equation of the line of symmetry on the graph?

Answer by edjones(8007)   (Show Source): You can put this solution on YOUR website!
1) It has a minimum because the coefficient of x^2 is positive.
.
2)
x^2+4x-5=0
(x+5)(x-1)=0
x=-5, x=1
(-5,1)
.
3)
(-5+1)/2=-2
Line of symmetry is a vertical line on y=-2
.
Ed
.


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