Question

Can Someone Help me with this?

Find the equation of the line that passes through the points (-2, 1) and (1, -2).

Answer 1

This can be found by using two point formula:

\[\large \frac{y - y_1}{y_2 - y_1} = \frac{x-x_1}{x_2 - x_1}\]

Answer 2

\[y-1\div1-(-2)=x-(-2)\div1-(-2)\]

Answer 3

@waterineyes am Iin right way?

Answer 4

denominator is wrong..

It should be -2 -1 ..

Check it according to the formula I have written above..

Answer 5

sorry I always mixed up my eyes! @waterineyes

Answer 6

For left hand side..

Right hand side it is right..

Answer 7

\[\frac{y-1}{-2 - 1} = \frac{x- (-2)}{1 - (-2)}\]

Answer 8

\[\frac{y-1}{-3} = \frac{x +2}{3} \implies y - 1 = -x + 2\]

\[\large \color{green}{x + y = 3}\]

Answer 9

y-1/-3=x+2/3

Answer 10

Yes carry on..

Answer 11

Cross multiply now..

Answer 12

do I need to do cross multiplication after that?

Answer 13

3y-3=-3x+6?

Answer 14

or you can multiply -3 both the sides..

Do this one this will be easy for you..

Answer 15

y+3=-3?

Answer 16

y+x=-3 I mean @waterineyes

Answer 17

Again solve..

try it once more..

are you applying here cross multiplication??

Answer 18

y+x=3 double check it

Answer 19

Yes it is right..

Well Done..

Answer 20

Thanks @waterineyes

Answer 21

Welcome dear..