Question

Which equation represents a linear function?

Equation 1: y3 = 2x + 1
Equation 2: y = 3x + 1
Equation 3: y = 5x2 − 1
Equation 4: y = 4x4 − 1

Equation 1
Equation 2
Equation 3
Equation 4

Answer 1

im not sure about equation 1 because theres a 3 after the y and i dont know if that was an error but if it was and its actually meant to read : y=2x+1 then equation 1 &2 are both linear functions.