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OpenStudy (anonymous):
f(x) = 14x^2. Where does it intersect the x axis?
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OpenStudy (anonymous):
when x equals zero.
OpenStudy (anonymous):
how do you know?
OpenStudy (anonymous):
OpenStudy (anonymous):
it crosses the x axis when f(x) equals zero. you can find it by setting f(x) to zero and determining what x must be to make f(x) equal 0.
OpenStudy (anonymous):
It will intersect the x-axis when y=0. Solve 0=14x^2 for x; that is your answer.
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OpenStudy (anonymous):
oh I picked a bad one to try out for my purposes... thankyou for the explanation
OpenStudy (anonymous):
you can use the quadratic formula. or just set y equal to 0 and solve for x.
OpenStudy (anonymous):
that wolfram is super cool!
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