1. Which of the following statements best describes the graph of x + y = 4?
It is a line which intersects the x-axis at (4, 4).
It is a line which intersects the y-axis at (4, 4).
It is a line joining the points whose x- and y-coordinates add up to 8.
It is a line joining the points whose x- and y-coordinates add up to 4.
A is false because any point on the x axis will have y = 0 B is false because any point on the y axis will have x = 0 C is false; the coordinates add up to 4 D is the only thing left. It's true since x+y = 4 indicating that the coordinates add up to 4
You're close but the answer is actually choice C. The shaded region is below the slanted line so we'll have a "less than or equal to" sign instead of a "greater than or equal to" sign for the first inequality.
