I need to graph the equation y = x(x - 9)
so far i know that the zeros are 0, and 9, but I don't know how to find the vertex, i know that I should use the complete the square formula, (when i turn it into y= x^2 - 9x)..but I'm a little lost since there's no constant term.. so if you could tell me how to find the vertex using the completing the square formula or another way I would really appreciate it
Thanks,
Mo
so far i know that the zeros are 0, and 9, but I don't know how to find the vertex, i know that I should use the complete the square formula, (when i turn it into y= x^2 - 9x)..but I'm a little lost since there's no constant term.. so if you could tell me how to find the vertex using the completing the square formula or another way I would really appreciate it
Thanks,
Mo