SOLUTION: Y=(x-4)(x+2) I am having trouble graphing the parabola.

Question 132354This question is from textbook algebra 1
: Y=(x-4)(x+2) I am having trouble graphing the parabola. This question is from textbook algebra 1

Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
Y=(x-4)(x+2) I am having trouble graphing the parabola.
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X-intercepts:
If y = 0, x= 4 or x = -2
Plot (4,0) and (-2,0)
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y-intercept:
If x = 0, y = -4*2 = -8
Plot the point (0,-8)
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Since coefficient of x^2 is positive, the parabola opens up.
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With those three points and knowing it opens up you should be
able to sketch the parabola.
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Cheers,
Stan H.
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