How do you graph this function y equals 1 plus x plus 3?

Answer 1

You find the intercepts on the x and y axis: First, sub in x=0, giving you y=4. Then sub in y=0, giving you x=-4. So your intercepts are (0,4) and (-4,0).

Plot these 2 points, and draw a line between them (you can do this since your function is a straight line, not a curve).