Question

Which equation is a linear function?

Answer 1

im like 60% sure its y=x

Answer 2

y = x

Explanation:

In general ,A linear function has the form y = ax + b

so ,the functions :

y = √x

y = x²

y = x³

don’t meet the requirements of the definition

therefore none of them is linear.

but y = x is a valid choice (just put a = 1 and b = 0 in the expression y = ax + b)