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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
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Sep 8, 2017
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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
Mathematics
high-school
Arturro
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Hello,
y=x²-x-2=x²-2*1/2*x+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
Flashdisk
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Sep 14, 2017
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