3 years ago

What is the axis of symetry of the function f(x)= -(x+9)(x-2)

Advanced Placement (AP)

1 answer:

Stels [109]3 years ago

5 0

We first need to write the function in standard form.

y = -x^2 - 7x + 18

To find the axis of symmetry, we do -b/2a

The a and b are the coefficients of the x values.

So a would be -1 since -x is same as -1x

Follow that, b would be -7.

Then just plug the values in. - (-7)/2(-1) = -7/2

The axis of symmetry is -7/2

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