Question

which equation doesn't represent a linear function? $a. \: y = \frac{1}{2}x \: + 2$$b . \: y = {x}^{2} \\ c . \: y = 2x \\ d. \: y = x - 2$

Answer 1

The general equation for linear equation is,

$y=mx+b$

The equation y = x^2, consist of power term on the variable x. So this equation does not follow the linear equation and is a quadratic equation.

Thus, equation y = x^2 is not a linear function. Option B is correct answer.