gcse

[lament kindle]

start with trying to find the coordinates of M. draw a diagram of the line segment with M in it. find the height and width of the line segment and split both of these into the ratio

[languid spear]

i’ve done this

[lament kindle]

yh do that but in 2D

with a coordinate grid

[languid spear]

?? wdym

oh wait

i’ll try

[quiet jackal]

@languid spear did u get

[languid spear]

i don’t even have an answer i gave up halfway 😭

[quiet jackal]

Oh

Did u find out point m

[languid spear]

yeah i stopped after that , got (-1,9)

[quiet jackal]

I got same

Why did u stop

You can work out the gradient of the line then the inverse

[languid spear]

Because I didn’t know what to do next and i cba

[quiet jackal]

And work out the equation of line

[languid spear]

change in y over x so it’s 1/4??

[quiet jackal]

Yes

[languid spear]

and i do perpendicular so it becomes -4

[quiet jackal]

Yes

Then sub into y-y1 = m(x-x1)

Oh

U can do that way with the coordinates m

So m is -1 9

So y is 9 and x is -1

9 = -4x + c

Then solve for c

9 = -4(-1) + c

Yeah

[languid spear]

ok tysm !!