Question

alebra help im stuck posting problem

Answer 1

algebra 1 or 2

Answer 2

im studying for placement test I have -2/-2 but idk where to go form here

Answer 3

What exactly equals -2/-2?

\[? = \frac{ y2-y1 }{ x2-x1 }\]

Answer 4

I used y2-y1/x2-x1

Answer 5

so when you use that formula what do you solve for

Answer 6

idk I just remember the formula and I got as far as -2/-2 and idk what to do

Answer 7

@ECE ?

Answer 8

@Luigi0210 you know this bud?:)

Answer 9

Ofc I do, okay first thing is find the slope:
\[\LARGE m=\frac{y_2-y_1}{x_2-x_1}\]
Then use the point-slope formula:
\[\LARGE y-y_1=m(x-x_1)\]

Answer 10

ahhhhhhhhhhhh ok so I did the m part I got -2/-2 is that correct?

Answer 11

That's right, simplify it now.

Answer 12

-1/-1?

Answer 13

which is..?

Answer 14

uhmmmmmmm 1?

Answer 15

Exactly, now plug that into the next formula.

Answer 16

okay one sec and I will

Answer 17

wait what do I plug it into ? y or x?

Answer 18

-2=-3?

Answer 19

No, you plug it into m, the x and y's are for coordinates

Answer 20

ok so I plug 1 into there and then what?

Answer 21

Pick one of the coordinates points, choose one any one.

Answer 22

and plug it into every x and y spot?

Answer 23

Like this:
We have the slope 1, and we'll use the point (-2, -1)
So we plug it in and get:
y+1=1(x+2)
Now just distribute and simplify

Answer 24

If you did it right, you should get answer choice B

Answer 25

ok I got y+1=1x+2

Answer 26

then I get x=1x+1 ?

Answer 27

*y=x+1, yes :)

Answer 28

ok @Luigi0210 I remember this problem on test that was .ike 3(7x+y)=6 or something like that but all the asnwers where like fractions you have any idea what kind of problem that was ? I need help on it bc I couldn't figure it out

Answer 29

Hmm, fractions?

Answer 30

ok its to hard to ecplain but ok when I have something like this 2(1/2x+3)=0 and I have to make each side zero had do I go about doing that with a fraction in there just put whatever x is over 1 and multiply them?

Answer 31

Do you remember how to multiply fractions?

Answer 32

yes just straight across right

Answer 33

Yup, so when you multiply a whole number with a fraction, like 2*(1/2), it would look like this:
\[\LARGE \frac{2}{1}*\frac{1}{2}\]
Because 2 is the same as 2/1

Answer 34

ok that's what I thought ok one more question @Luigi0210 there was one wehre it said find the table the corresponds with the equation how would I do that?

Answer 35

Just plug in the x values, and match them up with the y values.

Answer 36

ok cool thanks

Answer 37

Anytime bro ლ(ಠ_ಠლ)