SOLUTION: Use the quadratic formula to determine the x-intercepts (if any) of the following function. Then evaluate the function for several values of x, and use the resulting points to grap

Algebra ->  Coordinate Systems and Linear Equations  -> Lessons -> SOLUTION: Use the quadratic formula to determine the x-intercepts (if any) of the following function. Then evaluate the function for several values of x, and use the resulting points to grap      Log On


   

Question 210301: Use the quadratic formula to determine the x-intercepts (if any) of the following function. Then evaluate the function for several values of x, and use the resulting points to graph the function.
f(x) = 2x^2 + 2
Do I need to rearrange the problem putting x to zero? 2x^2 + 2= 0
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
No you need to use the rule y = 2x^2+2
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Find the y value that goes with x = -2, x=-1,x=0,x=1,x=2
That will give you 5 points.
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Plot the points and draw a smooth curve thru them to get:
graph%28400%2C300%2C-10%2C10%2C-10%2C10%2C2x%5E2%2B2%29
Cheers,
Stan H.