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Earn +20 ptsQ: When the coefficient of x2 is negative?
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How can you determine the orientation of a parabola when written in standard form?
If the coefficient of x2 is positive then the parabola is cup shaped (happy face). If the coefficient of x2 is negative then the parabola is cap shaped (gloomy face).
What number must be added to the polynomial to complete the square x2-14x?
-12
What is the meaning of negative coefficient of x?
In the form y=mx+b, b is the y-intercept and m is the coefficient, so if an equation has a negative coefficient, m<0. As a graph, the slope of the line is negative.
Which way does a parabola open when the coefficient of its x2 term a is positive?
It is like the letter U.
What is the square root of -x squared?
-x times -x = x2 (negative multiplied with negative = positive) sqrt of x2 = x
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