Question

The coordinate grid shows points A through K. Which points are solutions to the system of inequalities listed below?

2x + y < 10
2x - 4y > 8

E, F, G, H, J
E, F, G
A, C, D, K
A, E, F

Answer 1

@amistre64 @Hero

Answer 2

@peachpi

Answer 3

either graph the lines to define the appropriate area, or start plugging in point to test them out

Answer 4

i dont no how to do that can you help?

Answer 5

pick a point, what are the x,y values for it?

Answer 6

@amistre64 here you go, this might help explain things better, you can draw on here if you like

Answer 7

so (3,2)

Answer 8

a point is defined as (x,y) there is not x=3, y=2 point ... there is a x=2, y=3 tho

plug thos values into the setup to see if they are true

Answer 9

(2,3)

Answer 10

sorry one sec

Answer 11

2x + y < 10
2 3
-----------
4 +3 < 10 , true


2x - 4y > 8
2 3
-----------
4 - 12 > 8 ... not looking so good for this point

Answer 12

ok cna we try (4,-2)

Answer 13

*can

Answer 14

so point E .. try it out, lets see what you get

Answer 15

i dont know how to plug it in

Answer 16

graphing the lines would be quicker of course ...

you have an x and y value ... and you have variables named x and y in your equations.

Answer 17

also, i provided an example already

Answer 18

copy. paste, input the values

2x + y < 10
4 -2
-----------



2x - 4y > 8
4 -2
-----------

Answer 19

if we draw the lines ... and im prolly getting this off a little