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12 July, 19:38

Find the x-intercepts for the parabola defined

by this equation:

y=3x² + 6x-9

Write your answer as two ordered pairs:

(x1,71). (x2.2)

Separate the values with a comma. Round, if

necessary, to the nearest hundredth,

+2
Answers (1)
  1. 12 July, 21:47
    0
    ( - 3, 0), (1, 0)

    Step-by-step explanation:

    To find the x - intercepts, let y = 0, that is

    3x² + 6x - 9 = 0 (divide through by 3)

    x² + 2x - 3 = 0 ← in standard form

    (x + 3) (x - 1) = 0 ← in factored form

    Equate each factor to zero and solve for x

    x + 3 = 0 ⇒ x = - 3

    x - 1 = 0 ⇒ x = 1

    The x - intercepts are ( - 3, 0), (1, 0)
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