the zeros of the function if they are r1 and r2 the factored form is f(x)=(x-r1)(x-r2) so
undistribute -1 f(x)=-1(x-2)(x-(-1))(x-(-2)) 3rd degree so it goes from bottom left to top right but the -1 flips it so it goes from top left to bottom right plot the points x=-2, x=-1, and x=2 on x axis draw a line (curved) that passes through (-2,0) (-1,0) and (2,0) and goes from top left to bottom right
