Answer:
y=x^2 has an inverse but it is not a function
Step-by-step explanation:
y = x
y=x has an inverse function. y=x is the equation of a line. All line has an inverse function and it is also a function
y = 2x + 1 is the equation of a line.
All line has an inverse function and it is also a function
y = x^2 is the equation of a quadratic
Quadratic equation has an inverse but it does not pass vertical line test.
Hence it is not a function
