Which of the following is true about the parabola f(x) = x2 + 6x - 9: The y intercept is (0, -18)
The axis of symmetry is x 3
The parabola will open up.
The parabola will open down.

A)26•2=52there are 2 sides with the same length116-52=64the other 2 side have to be half of 64 each64/2=32the width is 32b)make two sentences about these steps because your teacher knows how you write and explain things.

3x+9+4x+x=8x+9that's the answer for your question.