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Q: How does the coefficient of a affect the way the parabola opens?
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Which way does a parabola open when the coefficient of its y2term a is negative?

Nose points right, opens to the left.


Given the standard equation for a parabola opening up or down which way does a parabola open when the coefficient of the x2 term a is positiveUp or down?

In that case it opens upwards.


Which way does a parabola open when the coefficient of its x2term a is negative?

DOWN!


Which way does a parabola open when the coefficient of its y2-term is negative?

LEFT


The equation y -3x2 describes a parabola. Which way does the parabola open?

The given terms can't be an equation without an equality sign but a negative parabola opens down wards whereas a positive parabola opens up wards.


What way does the parabola open if a is greater than 0?

If a is greater than zero then the parabola opens upward.


Given the standard equation for a parabola opening left or right which way does a parabola open when the coefficient of the y2-term a is positive?

right


Which way does a parabola open when the coefficient of its x2 term a is positive?

It is like the letter U.


Given the standard equation for a parabola opening up or down which way does a parabola open when the coefficient of the x2term a is negative Up or down?

down


Which way does a parabola open when the coefficent of its x2-term a is negative?

Opens downward.


Given the standard equation for a parabola opening left or right which way does a parabola open when the coefficient of the y2-term a is positive Left or right?

left


Which way does a parabola open when the coefficient of its x2term a is positive?

Upwards: it is cup shaped, not cap shaped.