Question 699439
First off, the four points are on the line
(1) y = x/2 - 1
And the inequality you give is
(2) y <= 2x + 2.
So I'm confused about the question.
Is (1) also an inequality? Such as
(3) y > x/2 - 1, then the solution to this pair of inequalities is a shaded area above a dotted line for (3) (the 4 points) and below (2) which is a solid line.