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3 years ago

F(x) = −(x2 + x − 72) what is the axis of symmetry and write it in standard form

1 answer:

5 0

F(x) = -(x2+x-72)
y = -(x - 8)(x + 9)
the solutions are x = 8, -9; so the parabola is upside down (umbrella) crossing the x at 8 and -9, meaning that -9 + 8 = -1/2 = -0.5 is where the focus is, or x = -0.5 as the axis of symmetry

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