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NateSteele92
NateSteele92 NateSteele92
  • 10-07-2016
  • Mathematics
Answered

on the graph of y = x^ 2 - x - 2 represents

  1. The Vertex
  2. The y-Intercept
  3. The Solution
  4. The Axis of Symmetry

on the graph of y = x 2 - x - 2 represents 1. The Vertex 2. The y-Intercept 3. The Solution 4. The Axis of Symmetry class=

Verified Answer :

caylus
caylus caylus
  • 10-07-2016

Hello,

y=x²-x-2=x²-21/2x+1/4-2-1/4=(x-1/2)²-9/4

1. Vertex=(1/2,-9/4)
2. if x=0 then  y=0²-0-2=-2
3.The roots:
x²-x-2=0
==>(x-1/2)²-9/4=0
==>(x-1/2-3/2)(x-1/2+3/2)=0
==>(x-2)(x+1)=0
x=2 or x=-1

4. axe of symmetry: x=1/2

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