Question

Write an inequality describing the range of possible values of x.
A. 1/2 12 years ago

Answer 1

everything inside of the triangles is accepted solution?

Answer 2

what ?

Answer 3

"accepted solution" .. what does that mean?

Answer 4

the valid range is described with the geometry right? does it state which of the areas are part of the solution and which aren't

Answer 5

right, and no.

Answer 6

OK I guess everything inside of the triangles is part of solution and the rest isn't

Answer 7

? its not

Answer 8

the lines of the triangles being a border

Answer 9

oohhh ok

Answer 10

my answer would be D.

Answer 11

for example we have 2x+3 as dividing line. it means the function is true for anything that's greater than 2x + 3. for example 3 x would be greater at the same x value, or 2x+5

Answer 12

oh. ok?

Answer 13

also if you plot a point at the height y=1 at x position=2, that'd be wrong because y is supposed to be 2x and not smaller.

Answer 14

k

Answer 15

So my answers not D then

Answer 16

the lines divide the solution sets. one set is included and the other is not. to check which one is included, pick any point in either one and see if it is a valid point

Answer 17

what example point lies inside the lower triangle?

something where y is greater than 2x+3.
so something where when we put x=2, it does not give 2(2)+3 = 4+3=7
instead it gives a higher value like 12

Answer 18

ok

Answer 19

that's the first limitation

Answer 20

so im left with A,B,C as my answers.

Answer 21

yes

Answer 22

its probably something with 2 and 3 as well because that's in the equation for the dividing line

Answer 23

of course we should do it properly then we can easily see which one of them...

Answer 24

B should be it then because it has 2 & 3.

Answer 25

C** not B.

Answer 26

we have already given the y value and have to find x, so that it adds up
and in order for it to add up
it must have a reverse relationship

Answer 27

has 2&3.

Answer 28

y = 2x + 3. so, what does x need to be - re-arranging:
y - 3 = 2x
x = (y-3)/2

Answer 29

C is most likely

Answer 30

thanks! :)