Described and correct the error and finding slope and the y intercept of the graph of a linear equation. if you answer

Compare y = 4x -  3 to the standard

                y = mx + b.

You can see immediately that the slope, m, is 4 and that the y-intercept, b, is -3.  The error lay in the explanation (see the problem statement) that the y-intercept is 3.  That's not correct.