Question

Some simple graph/algebra help that this person need help with...

Answer 1

here's a picture of a diagnostic I was taking. I got that answer wrong...

Answer 2

the teacher made a typo btw. Its supposed to say pair not paid :)

Answer 3

The answer is given. I just need a why.

Answer 4

hmm

Answer 5

why did you pick x > -12 again?

Answer 6

Well I graphed it and I went to (-12,7) because that was where y was 7. The line was shaded above it so I picked x>-12

Answer 7

hmmm

Answer 8

ok I see, now what it's asking :/

Answer 9

well..... you are correct, about the -12, -7 point
when x = -12, y = -7
and the part above is the "true" section, of the shaded one

I didn't get the question at first, because, besides the typo, it also says "wich y-values"
whilst is only giving x-values in the options
anyway

Answer 10

Ahh true. Well I don't know how I didn't get confused on that. But why is it that I still got the answer wrong? Well it's the signs but what did I not do to get me to the answer?

Answer 11

one sec

Answer 12

hmmm actually it should be \(\bf 2x-7{\color{brown}{ y}}<25\qquad (x,{\color{brown}{ -7}})
\\ \quad \\
2x-7{\color{brown}{ (-7)}}<25\implies 2x+49<25\implies 2x<25-49
\\ \quad \\
x<\cfrac{25-49}{2}\implies \cfrac{\cancel{24}}{\cancel{2}}\implies x<-12\)

Answer 13

That makes soo much sense! Thanks so much. I tried plugging y in but I guess I failed terribly and I came up with the weirdest answer. Thanks for the help!

Answer 14

to be fair, the question can be worded much better
so... don't sweat it too much :)