# SOLUTION: how do you graph f(x)=x^2-2x-9?

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 Question 296659: how do you graph f(x)=x^2-2x-9?Found 3 solutions by checkley77, richwmiller, Fombitz:Answer by checkley77(12569)   (Show Source): You can put this solution on YOUR website!f(x)=x^2-2x-9 (0,-9) Y intercept. x=(2+-sqrt[-2^2-4*1*-9])/2*1 x=(2+-sqrt[4+36)/2 x=(2+-sqrt40)/2 x=(2+-6.32456)/2 x=8.32456/2 x=4.16 ans. (4.16,0) X intercept. x=(2-6.32456)/2 x=-4.32456/2 x=-2.16 ans. (-2.16,0) X intercept. (graph 300x200 pixels, x from -6 to 5, y from -10 to 10, x^2 -2x -9). Answer by richwmiller(9144)   (Show Source): You can put this solution on YOUR website!repeated 18 minutes later no similar problems and no repeats in the same or different category. Answer by Fombitz(13828)   (Show Source): You can put this solution on YOUR website!Just like every other function, create a table of x,y data points. Choose a range, how about x from -5 to 5. Then for each x, use the function to get y. ( , ) Then take your next x, x=-4 and do the same. ( , ) (,) (, ) (, ) (, ) (, ) (, ) (, ) (, ) (, ) Then draw a line through all of the points. The more points you have the smoother the graph will look. . . .