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

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Answer 1 · 2015-05-12T15:33:45

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: $x = 4/18 + (2sqr37)/18.$

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

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