Solve for y
y=-\frac{\left(x-5\right)\left(x-4\right)}{45}
Solve for x (complex solution)
x=\frac{-\sqrt{1-180y}+9}{2}
x=\frac{\sqrt{1-180y}+9}{2}
Solve for x
x=\frac{-\sqrt{1-180y}+9}{2}
x=\frac{\sqrt{1-180y}+9}{2}\text{, }y\leq \frac{1}{180}
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y=-\frac{1}{45}x^{2}+\frac{1}{5}x-\frac{4}{9}
Divide each term of -x^{2}+9x-20 by 45 to get -\frac{1}{45}x^{2}+\frac{1}{5}x-\frac{4}{9}.
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