Question

which of the following is the equation of a line that passes through the points (1, 6) and (2, 1)
a. y=-5x+1
b.y=2x+1
c.y=5x-1
d.y=-5x+11

Answer 1

do you know how to solve for slope?

Answer 2

rise/run right?

Answer 3

yeahhhhh
SOLVE FOR THE SLOPE FIRST

Answer 4

use this
(y-y1)/(x-x1)=(y2-y1)/(x2-x1)

you have no need to find slope 1st for this eq..just plug in values and solve..

Answer 5

@zaibali.qasmi
I got this, you can try helping other kids

Answer 6

and don't believe him

Answer 7

let us do this step by step
solve for the slope first

Answer 8

oh so that's not right...I started plugging it in

Answer 9

it is not correct

Answer 10

ho can say its not corect..???if i prove it then..????

Answer 11

he is using similar techniques but all in one equation

Answer 12

you don't need to learn that for now because it will only confuse you

Answer 13

okay thank you, So what would I plug in and where would I plug it in to find slope? im sorry I'm teaching this to myself I'm a bit confused ^^"

Answer 14

look at your given points
(1, 6) and (2, 1)
assign x1, y1 and x2, y2

Answer 15

okay I know that

Answer 16

@zaibali.qasmi chill
just help other kids you're doing this wrong
math is not about plugging in

Answer 17

@nincompoop @ghosty if i prove it by using that one which suggest then..???
its option D by hat eq as i suggest..and am going to prove here,,,,see next..

Answer 18

someone's pride is hurt I can see

Answer 19

d

Answer 20

@sochittasal try giving the answer next time and I will have you banned for cheating

Answer 21

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

\[\frac{ y-6 }{ x-1 }=\frac{ 1-6 }{ 2-1 }\]
\[\frac{ y-6 }{ x-1 }=\frac{ -5 }{ 1 }\]

now cross multiplication gives...

(y-6)*1=-5(x-1)
=> y-6=-5x+5
=>y=-5x+5+6
=>y=-5x+11

see its exactly option D...

Answer 22

thank you guys for helping out

Answer 23

I think that method is longer and it does not help with the concept

Answer 24

i appreciate it very much

Answer 25

I bet you, she will ask another problem of the same concept because it wasn't taught properly

Answer 26

@nincompoop ...its not pride ..its selfrespect...if you dont want someone else interaction then just going on everything..why you call that your method is wrong..???

Answer 27

@see above what she say..i appriciate it much..now lolllzzz.

Answer 28

because it is wrong and unintuitive
the reason they are asking for help is because they do not understand the concept and you're just asking people to plug numbers in
math is not about plugging things in

Answer 29

you have to go in their level of understanding and not assume that they know what that equation you gave

Answer 30

when there is a way to solve question ...in easy way..then y you are taking asker to a hard one..??

Answer 31

it is not more difficult, in fact yours require more step that is cross multiplication

Answer 32

people here get simple multiplication wrong