Answer: it is either A or C but I would go with C because it should be y=mx+b and C shows y=4 and it also shows y=1/2x. A shows that for y the answer would be 2 on a number line and x would be 4 on a number line. On a number line you would start with x and finish at y so then you would start at 4 and go over 2.
Step-by-step explanation:
