Which point is a solution to the equation y = 4x - 5

There is no "one" solution to the equation, since there is an infinite number of pairs letting the equation hold. In other words:

let x = 2, then y = 4 × 2 - 5 = 3. Then, the point (2,3) is a solution to the equation. In general, every point with the following coordinates is a solution to the equation: ( k , 4k -5 ).

On the other hand, if by the word "solution" you mean the roots of the equation, then you have to set it equal to 0 and solve like so...

If so, the point you've been looking for is (5/4 , 0)