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Mathematics 9 Online
OpenStudy (anonymous):

@iGreen and @sleepyjess and @surviver101 plz come help medal awaiting and testimonal thingie

OpenStudy (anonymous):

OpenStudy (anonymous):

@iGreen

OpenStudy (igreen):

6x - 3y = 12 Subtract 6x to both sides: -3y = -6x + 12 Divide -3 to both sides: y = 2x - 4 So what's the slope of this? It's in the form of y = mx + b, where m = slope.

OpenStudy (anonymous):

2

OpenStudy (igreen):

Yep, you got it. So the slope for #1 is 2.

OpenStudy (igreen):

And what's the slope for y = 5x + 4?

OpenStudy (anonymous):

wait i said wat is the answer like a b c or d

OpenStudy (anonymous):

5

OpenStudy (igreen):

Yep, so the slope for B is 5. So far we have: A - 2 B - 5

OpenStudy (anonymous):

ok

OpenStudy (igreen):

For the table, we can just take any two points and plug them into the slope formula. Let's take (1, 2) and (3, 8). \(m = \dfrac{y_2-y_1}{x_2-x_1}\) \(m = \dfrac{8-2}{3-1}\) Subtract: \(m = \dfrac{6}{2}\) Can you divide that?

OpenStudy (anonymous):

3 maybe

OpenStudy (igreen):

Yep, that's 3. So C is 3.

OpenStudy (anonymous):

yea

OpenStudy (igreen):

For D we can do the same thing. Let's take points (0, -4) and (1, 1). \(m = \dfrac{y_2-y_1}{x_2-x_1}\) \(m = \dfrac{1+4}{1-0}\) Add and Subtract: \(m = \dfrac{5}{1}\) Can you divide that?

OpenStudy (anonymous):

5 maybe i think lol

OpenStudy (igreen):

Sorry that's 4 / 1.

OpenStudy (anonymous):

o divide

OpenStudy (igreen):

Just divide 4 / 1, what do you get?

OpenStudy (anonymous):

umm 1 i think

OpenStudy (igreen):

No, check again

OpenStudy (anonymous):

4

OpenStudy (anonymous):

am i write

OpenStudy (anonymous):

@iGreen

OpenStudy (anonymous):

its 4 @iGreen

OpenStudy (igreen):

Yes, that's right. So we have: A - 2 B - 5 C - 3 D - 4

OpenStudy (igreen):

So which one is bigger?

OpenStudy (anonymous):

a

OpenStudy (anonymous):

right

OpenStudy (igreen):

2 isn't the biggest one..

OpenStudy (anonymous):

o -5

OpenStudy (anonymous):

is it -5

OpenStudy (igreen):

Those numbers aren't negative..they're all positive..and yes, the answer is 5.

OpenStudy (anonymous):

ok ill post a new one in another one

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