If x can be any number, how many solutions are there for the equation?

y = 4x - 1

A.

There are two solutions.

B.

There is no solution.

C.

There are many solutions.

D.

There is only one solution.

C. There are many solutions

4 (5) - 1=19

4 (10) - 1=39

I agree ... C is the answer. Anytime you put in a value for X, you get a different Y answer, so yes, there are many answers. The other answer gives you two examples using x = 5 and x = 10. You could also substitute any other number for x and get a different y answer; an infinite number of x's and y's actually.