SOLUTION: 2) For the function y = x2 - 4x - 5, perform the following tasks: a) Put the function in the form y = a(x - h)2 + k. b) What is the line of symmetry? c) Graph the functio

Algebra ->  Quadratic Equations and Parabolas  -> Quadratic Equations Lessons -> SOLUTION: 2) For the function y = x2 - 4x - 5, perform the following tasks: a) Put the function in the form y = a(x - h)2 + k. b) What is the line of symmetry? c) Graph the functio      Log On


   



Question 31912: 2) For the function y = x2 - 4x - 5, perform the following tasks:
a) Put the function in the form y = a(x - h)2 + k.
b) What is the line of symmetry?
c) Graph the function using the equation in part a. Explain why it is not necessary to plot points to graph when using y = a (x – h)2 + k.
Show graph here.


Explanation of graphing.




d) In your own words, describe how this graph compares to the graph of y = x2?
Answer:

Answer by venugopalramana(3286) About Me  (Show Source):
You can put this solution on YOUR website!
Y=(X^2-2(X)(2)+2^2)-2^2-5=(X-2)^2-9
SO LINE OF SYMMETRY IS X-2=0...OR....X=2
YOU CAN PLOT AXIS X=2 AND VERTEX (2,-9) FIRST..THEN INTERCEPTS(0,-5)AND (5,0)AND (-1,0)..TO PLOT THE GRAPH
+graph%28+600%2C+600%2C+-8%2C+10%2C+-15%2C+100%2C+%28x-2%29%5E2-9%29+