write the function for fx in standard formSolutionIts a para

write the function for f(x) in standard form

Solution

Its a parabolic function

Vertex : (h, k) = ( -1, 9)

y = a(x -h)^2 + k

y = a(x +1)^2 + 9

Point on graph : (0, 8)

8 = a*1 +9 ; a = -1

y = -(x+1)^2 +9

= -x^2 -1 -2x +9

y = -x^2 - 2x +8   (standrard form)