Question

Determine which two equations have nonlinear graphs.

y=2x^3

y=3x

y= 2x +1/2

y= x^2 + 2

y=0.5x + 3

Answer 1

The slope-intercept form of linear function:

$y=mx+b$

$y=2x^3$ - nonlinear

$y=3x$ - linear

$y=2x+\dfrac{1}{2}$ - linear

$y=x^2+2$ - nonlinear

$y=0.5x+3$ - linear