Question

HELP PLEASE ! Choose the system of inequalities that matches the graph below

image : http://postimage.org/image/2aa782l50/

A. 4x + y < 9
x - y ≤ 1
B. 4x + y > 9
x - y ≥ 1 9
C. 4x + y ≥ 9
x - y > 1
D. 3x + y ≤ 9
x - y < 1

Answer 1

Graph of the dotted/dashed line is y = x-1. Get x to the other side to get -x+y = -1 and multiply everything by -1 to get x-y = 1. Now because the shaded region is below the dotted line, we know that y < x-1. This translates into x - y > 1 (using the same steps)


So one of the inequalities is x - y > 1. So this means that the answer is choice C


We can use the same logic and reasoning to find the other inequality, but that's not needed as no other answer choices have x-y > 1

Answer 2

Thanks .. for B. i made a mistake putting 9 after the 1

Answer 3

That's ok, I figured that to be a typo.

Answer 4

Is there another way you can help me instead of on here ?

Answer 5

Not sure how this site works entirely. Is there a direct messaging? If not, then maybe email will work.

Answer 6

I dont think they have that but email would work

Answer 7

let me know when you get that

Answer 8

Ok , i'll email you in a few when i need help

Answer 9

ok will be deleting last post cause I'm not sure how their tos works

Answer 10

Ok