Finding equation of coordinate

[dusty knoll]

Hiya omg how do u find equation of ab n simplify like a step by step method

[sly marten]

all 5 of these or just b

[dusty knoll]

b

[sly marten]

ok have u found the gradient

or not

[dusty knoll]

yh

i think

[sly marten]

ok what did u get

[dusty knoll]

i got -1/2

[sly marten]

ok good

y = -1/2x + c

you only need to substitue one of the co-ordinates so i'll just choose point b so. (3, -1)

[dusty knoll]

okay so@

AH RIGHT

plug it into y=mx + c

nah my brains fried didnt do any maths in ages

[sly marten]

-1 = -1/2 x 3 + c
-1 = -1.5 + c
-1 + 1.5 = c = 1/2

y = -1/2x + 1/2

[sly marten]

yep

[dusty knoll]

ah okay thabks babe

[sly marten]

nw

[dusty knoll]

ill litro add u cause i'll deffo ask frequently questions

[sly marten]

ofc

[dusty knoll]

thanks om

[sly marten]

nw man

the rest you can do most definetly

[dusty knoll]

why is c 1/2