Question

help?

Answer 1

for those that don't want to download an rtf
find the equations for each table and then find the solution

Answer 2

to start, let's do line 1. we're going to use \(y-y_1=m(x-x_1)\)
we need to find m using the slope formula

Answer 3

okay so the slope would be -3 for line 1 yes?

Answer 4

correct, then we need an \((x_1,y_1)\) so we just pick either point in the table
\(y-9=-3(x-(-1))
\\y-9=-3(x+1)
\\y-9=-3x-3
\\y=-3x+6\)

do the same thing for line 2, then we can set them equal to each other to find the solution

Answer 5

find the slope of line 2?

Answer 6

yeah, then put it into point slope form

Answer 7

the slope is 2 iknow that lol

Answer 8

and let me do the other part , one moment

Answer 9

y-(-5)=2(x-2)

Answer 10

yeah?

Answer 11

I guess it's not that necessary to do point slope form cause you can just find the y intercept (the place where x=0) by adding 2 to the first point
close
\(y-5=2(x-2)\)

Answer 12

ya so now i solve that?

Answer 13

yeah

Answer 14

ok i got y=2x-6 therefore the y intercept is -6... yea?

Answer 15

the y intercept should be 1, let me see what happened
\(y-5=2(x-2)
\\y-5=2x-4
\\y=2x-4+5
\\y=2x+1\)

Answer 16

so we want the solution to the following equations
\(y=-3x+6,\\ y=2x+1\)

do you know how to do that?

Answer 17

ill explain hoe im got what i did



y-(-5)=2(x-2)
y+5=2x-1
-5 -5
________________
y=2x-6

Answer 18

I'm no hoe : (

Answer 19

how****

Answer 20

im sorry lmao

Answer 21

hahaha
I said 5 btw, not -5
we if the point on the table was (2,-5) then your equation would be right

Answer 22

so my equation is wrong?

Answer 23

yeah. \(y-y_1=m(x-x_1)\\(x_1,y_1)=(2,5)\\m=2\)

alternatively you can try it with x1,y1=(-1,-1)

Answer 24

ugh i hate math this is so confusing.. thank you for helping me.... but what is the anser

Answer 25

answer*

Answer 26

I already said the equation to line 2 is \(y-5=2(x-2)
\\y-5=2x-4
\\y=2x-4+5
\\y=2x+1\)

so now we have \(y=2x+1\\y=-3x+6\)

can you find the solution to that?

Answer 27

would i now substitute?

Answer 28

mhm
\(-3x+6=2x+1\)

solve for x, replace in one of the original equations to find the y

Answer 29

so i did 2x+1 =y
therefore x=y-.5 yes?

Answer 30

eh, that's kind of unnecessary, we already have them both in terms of y, so we can just substitute in straight away