SOLUTION: y=x^2+4x-5 find the x-intercept find the y intercept find the vertex find the axis of symmetry MUST SHOW ALL WORK FOR EACH QUESTION AND GRAPH! please help tha

Algebra ->  Rational-functions -> SOLUTION: y=x^2+4x-5 find the x-intercept find the y intercept find the vertex find the axis of symmetry MUST SHOW ALL WORK FOR EACH QUESTION AND GRAPH! please help tha      Log On


   

Question 1039034: y=x^2+4x-5
find the x-intercept
find the y intercept
find the vertex
find the axis of symmetry
MUST SHOW ALL WORK FOR EACH QUESTION AND GRAPH!
please help thank you
Answer by josgarithmetic(39617) About Me  (Show Source):
You can put this solution on YOUR website!
Change the equation from its general form into the equivalent standard form, and you can read the vertex from the equation and identify the symmetry axis. Simply factoring the general form you have will be enough for the x-intercepts.



0=%28x%2B5%29%28x-1%29



Actually, the factorization is also enough to put you most of the way to finding the symmetry axis and vertex. Vertex occurs in the exact middle of the "zeros". Those are -5 and +1; so %28-5%2B1%29%2F2=-2=x%29, the symmetry axis. What would be y?