Question 262296
Hi, since there are no exponents of 2, we have a linear function. 
If you meant 5x^2-2y = 8,
then
step 1 - subtract 5x^2 from both sides to get
-2y = -5x^2 + 8
divide by -2 to get
y = (5/2)x^2 + 8
this is expressed as a quadratic model.