Question

Write an equation in standard form of the line that passes through (2, -3) and (-3, 7).


Thank you for your help!

***will reward medal /fan! ***

Answer 1

Do you know how to find slope

Answer 2

yes; y2-y1 over x2-x1. correct?

Answer 3

yup

Answer 4

now plug it in the formula y-y1=m(x-x1)

Answer 5

lilai, so find the slope

Answer 6

(7-(-3))/(-3-2)

Answer 7

i still don't get it
D:

Answer 8

the equation of a line has the formula: y-y1=m(x-x1)

Answer 9

Okay lilai, find the slope and then tell me what it is.

Answer 10

where m is the slope of the line

Answer 11

m = change in y/ change in x = 7-(-3)/-3-2)=-2, so plugging in m you get, y-y1=-2(x-x1)

Answer 12

choose any coordinate point from the question as your y1 and x1. so you get:
y-(-3)=-2(x-2)
y+3=-2(x-2)

Answer 13

alternatively you can use the other coordinate point (-3,7) as your x1 and y1. So you will get
y-7=-2(x-(-3)
y-7=-2(x+3)

Answer 14

hoohhhhhh thanks, you just clarified something for me! yay!

Answer 15

y+3=-2(x-2) and y-7=-2(x+3) are both correct answer

Answer 16

...if they are both the correct answer, then they are both standard form?

Answer 17

yes you can choose whichever you want, both are correct

Answer 18

but do simplify before giving the final answer

Answer 19

oh! thank you. would you mind also answering a couple more? cuz 2mr i have a great big test :P if you don't mind of course. medal rewarded (;

Answer 20

sure, but do simplify and put the answer in ax+by=c form

Answer 21

since that is the standard form for a line

Answer 22

Write an equation in slope-intercept form of the line satisfying the given conditions: is perpendicular to 4y=3x-8 and passes through (0,-6)


THANKS AGAIN!

Answer 23

Now first of all the slope intercept form of a line is given by the formula y=mx+c

Answer 24

where m is the slope of the line and c is the y intercept

Answer 25

sorry i started a new post so i could reward you another medal =) and also because they're too many comments on this one LOL i'll send you the link

Answer 26

http://openstudy.com/study#/updates/5285de6fe4b06e2156423ba0