Question

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Answer 1

I really need help.

Answer 2

Mercedes, firstly, welcome to Openstudy, secondly, please only post one question at a time, this is a reminder for next time. I'm sure someone here will be able to give you the help you need. =)
Hope you have a great day,
Andy|Andriod09.

Answer 3

y > -3x + 4

just sub your points in and see which one is correct

(A) (-1,7)
7 > -3(-1) + 4
7 > 4 + 4
7 > 8 (not correct)

(B) (0,3)
3 > -3(0) + 4
3 > 0 + 4
3 > 4 (not correct)

(C) (1,3)
3 > -3(1) + 4
3 > -3 + 4
3 > 1 (BINGO...this works)

(D) (3,-6)
-6 > -3(3) + 4
-6 > -9 + 4
-6 > - 5 (not correct)

It is C.

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-x - 2y = 6
-2y = x + 6
y = -1/2x - 3

y intercept is -3

to find x intercept sub in 0 for y
-x - 2(0) = 6
-x = 6
x = 6 (x intercept)

so plot your points (0,3) and (6,0) and draw a line to connect them
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4x + y = -3
y = -4x - 3

you have a negative slope, therefore your line will falling

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same question as # 3

Answer 4

thank you!(:

Answer 5

your welcome :)