Please help! Will give best answer!?

Science & Mathematics by Anonymous 2018-05-18 13:09:38

Social Science

1 answer

I need help with this one question! What are the coordinates of the focus of this parabola? y = 1/4 x^2 - 3x+18

Anonymous

We use the model (x - h)² = 4p(y - k) y = 1/4 x² - 3x + 18 1/4 x² - 3x = y - 18 x² - 12x = 4y - 72 x² - 12x + 36 = 4y - 72 + 36 (x - 6)² = 4 (y - 9) -h =-6----> h = 6 -k =-9----> k = 9 now 4p = 4-----> p = 1 F (h, k+p) F (6, 10) ************