What is the surface are of this prism?
answer: 6 strips
the y intercept is 3
you can also say that the y intercept is at (0,3) which is a more detailed answer. however saying "y intercept is 3" is sufficient enough because the x coordinate of the y intercept is always x = 0.
the y intercept is the location where the graph crosses or touches the y axis. this is at the halfway point between the 2 and 4, so (2+4)/2 = 6/2 = 3
the correct answer is 19,25,31