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OpenStudy (anonymous):
which of the quardratic functoins below have exactly on x-intercept? a.y=x^2-9 b.y=x^2-6x+9 c.y=x^2-5x+6 d.y=x^2+x-6
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OpenStudy (anonymous):
A
OpenStudy (anonymous):
A straight line only crosses the x-axis once.
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