I need more help asap please

Question

Is f(x)=4x2−3 a one-to-one function on the domain (−∞,∞)?

Options:

-No, f(x)=4x2−3 is not a one-to-one function on (−∞,∞) because there is an output value that has more than one corresponding input value.

-Yes, f(x)=4x2−3 is a one-to-one function on (−∞,∞) because there is an output value that has more than one corresponding input value.

-Yes, f(x)=4x2−3 is a one-to-one function on (−∞,∞) because each output value has exactly one input value.

Answer 1

The answer would be no. When dealing with a function that has an x² in it, the function will not be one-to-one because some y-values will have more than one x-value they correspond to.

Another easy way to tell if a function is one-to-one is to use the horizontal line test. Graph the function using a graphing calculator. If you can draw a horizontal line and it crosses the graph in more than one spot, the function is not one-to-one.