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How to find the x and y-intercept given #f(x)= 9x^2-2x-4#?

Answer 1

Eva Abramson

To find y-inercept, make x = 0 -> y = -4

To find x-intercepts, make y = 0:

Solve quadratic equation: #9x^2 - 2x - 4 = 0#

#D = d^2 = 4 + 144 = 148 -> d = +-2sqr37#

Two x-intercepts: #x = 4/18 + (2sqr37)/18.#

#and x = 4/18 - (2sqr37)/18#

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Answer 2

Isaiah Anthony

To find the x-intercepts, set ( f(x) ) equal to zero and solve for ( x ). To find the y-intercept, evaluate ( f(x) ) at ( x = 0 ).

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Answer from HIX Tutor

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.

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