Question

A & D???Which inequality will have a shaded area above its graph?


2x − y ≥ 4



4x + 3y < 6



x − 9y ≤ 1



x − 3y > 4

Answer 1

put in y = mx + b form

A.
2x - y >= 4
-y >= -2x + 4 --- multiply by -1 to make y positive...and change inequality sign
y <= 2x - 4

< less then means shading below the line....this is not the correct answer

D.
x - 3y > 4
-3y > -x + 4 -- divide by -3...change sign
y < x - 4/3

< less then....not correct

so it is not A or D

try doing the same with the other answer choices and see what you get

Answer 2

just remember that when putting in y = mx + b form, when dividing/multiplying by a negative, it changes the inequality sign

Answer 3

y>x/9-1/9

Answer 4

@dan815

Answer 5

I don't get why I had to put it into y=mx+b form

Answer 6

@Hero

Answer 7

it means, if x =1, y =1
if x =2, y =2, ok?

Answer 8

So I have to put it into y=mx+b?

Answer 9

I get that

Answer 10

that means , y > x (GREATER THAN X)

Answer 11

I also get that, But A & D are greater

Answer 12

hence, all you have to do is isolate y

Answer 13

and if they ask you ABOVE, that is your y must > the other

Answer 14

Ohhhhhhhhhhhh.

Answer 15

I didn't know it had to be above to y=x line, and y>____

Answer 16

for A) \(2x-4\geq y\)

Answer 17

your y is LESSER, it is not GREATER

Answer 18

I get how to isolate

Answer 19

I understand now. Thanks!