how to plot quadratic equation of 2 variable

how to plot this equation:

y=(-22916841.3/(2*250))*x.^2+5080.33*x+55

Answer 1

[Star Strider]

One approach —

syms x 
y=(-22916841.3/(2*250))*x.^2+5080.33*x+55

y = 

figure
fplot(y,[-42 42])
grid

.