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Mathematics 20 Online
OpenStudy (anonymous):

8x+x(x-2)=0 (0,-6)?

Directrix (directrix):

Zero in and zero out. 8x+x(x-2)=0 8*0 + 0*(0 - 2) = 0 ---> (0,0)

OpenStudy (anonymous):

8x + x(x - 2) = 0 8x + x^2 - 2x = 0 x^2 + 6x = 0 (x + 3)^2 - 9 = 0 (x + 3)^2 = 9 x + 3 = plus/minus 3 x = -3 plus/minus 3 so x = 0, -6

OpenStudy (anonymous):

ok now i have to figure out the x-intercepts

OpenStudy (anonymous):

those are the x intercepts, 0 and -6

OpenStudy (anonymous):

ok i solved for the solution and got that answer, so its the same anwer for the x intercepts??

OpenStudy (anonymous):

yes, if y = 8x+x(x-2) then y would be 0 at x = 0, -6 so the parabola crosses the x axis at 0, -6

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