Answer is y=ax^2 + bc + c-
Reason a linear equation will not have an exponent. This is a parabola.
y=mx+b is y intercept form of linear equation
y-y1 = m (x-x1) is point slope form of linear eq.
Ax + By = C is standard form of linear eq.
❌y=ax^2 + bc + c- is not linear, its a parabola
y = kx is constant of proportionality, is linear