Question

Which equation represents a nonlinear

Function

2y = 1/2x + 5
y = 1/2x - 5
3y = 1/2x + 5
4y = (1/2)^x -5

Answer 1

4y = (1/2)^x -5

Explanation:

The first three equations are lines. All the variables have a power of just one (power of one is a math number that is not written) They are actually all written in slope-intercept form even. Line equations are linear function. Yay the words match!

You get a curve (not linear) when you have exponents, square roots or variables in the denominator of a fraction. Or as here, a variable for an exponent!