# How can I tell whether a parabola opens upward or downward?

The highest order term, the coefficient of the

Though any quadratic formula will 'dip' one way or another, the term that will provide the strongest overall direction to the equation will be the 'leading term', or the term with the highest power.

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When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

- How do you know if #x^2-10x-y+18=0# is a hyperbola, parabola, circle or ellipse?
- If lx+my=1 is the normal to the parabola y^2=4ax then prove that al^3+2alm=m^2 ?
- How do you complete the square to write in vertex form? #f(x)=-3x^2+4x+2#
- How do you write the correct equation that fits the parabola?
- How do you identity if the equation #x^2+y^2+6y+13=40# is a parabola, circle, ellipse, or hyperbola and how do you graph it?

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