Question

How do you write an equation in slope intercept form for a line that passes through a certain set of points? And how do you do it if they tell you the x intercept, but not the y intercept? Thanks!

Answer 1

slope =(y2-y1)/(x2-x1)
slope intercept form =
y=mx+b

Answer 2

Ok, so you use the points in slope formula? But what if you're only given one set of points? Like if it said, slope -5, passes through (-3,-8) ? then how would you do the formula?

Answer 3

use formula, \[y-y_{1}=m(x-_x{1})\]

Answer 4

m=-5
y1=-8
x1=-3

Answer 5

ok

Answer 6

If I deserve medal then give me one

Answer 7

u need help with equation?

Answer 8

hold on one sec

Answer 9

Thanks! ok how do I give you a medal haha?

Answer 10

next my name click on good answer

Answer 11

Oh wait, what if it's perpendicular?

Answer 12

2 line intersect have angle 90 degree

Answer 13

paralell never intersect

Answer 14

Right, I know, so how would you put that in slope intercet equation?

Answer 15

slope -5, passes through (-3,-8) ?

Answer 16

No, if it says that it's perendicular to lik efor examle, y=3x-2

Answer 17

let do this ffrist
y-(-8)=-5(x-(-3))
y+8= -5(x+3)
y= -5x-15-8
y= -5x -23

Answer 18

Yes, I got that

Answer 19

u want write anothe equation is perendicular to this line y=3x-2?

Answer 20

yes, and passes through (6,-1)

Answer 21

perendicular slope is flip and opposite side
Example :
slope = -1/3 than
y-(-1)=-1/3(x-6)
\[y+1=\frac{-1}{3}( X)+2\]\[y=\frac{11x}{3}+2-1 \]\[y=\frac{-1x}{3}+1\]
\[y=\frac{1x}{3}+1 \]perendicular to line
y=3x-2
u can check by : produc of 2 slope is -1 then they are perendicular

Answer 22

Thanks!

Answer 23

\[\frac{-1}{3}\times3=-1\]
-1 yes they are perendicular

Answer 24

good cluck your home work

Answer 25

Thank you

Answer 26

u forgot give me a medal

Answer 27

How do I do that again?

Answer 28

next my name click on good answer

Answer 29

d u see?

Answer 30

next may name right hand side

Answer 31

It won't let me click on the medal symbolk though

Answer 32

u see medal or good answer?

Answer 33

click on give medal or good answer

Answer 34

There is nothing that says that

Answer 35

not thing next to my name? some one just give me

Answer 36

never mind

Answer 37

There is a medal symbol and it says 117, and then a shield and it says 10. I can't click on either of those. There is nothing else.

Answer 38

next it says 10

Answer 39

after it says 10

Answer 40

this u see the box say good answe or give medal?