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# helppp with coordinate Geomertry watch

2) The equation of the line L is 2x+3y=24 and A is the point (4,1)

a) find the gradient of the line L

b) hence write down the gradient of a line perpendicular to L
2. To find the gradient of L re-arrange the equation and divide by 3. Then the gradient= co-efficient of the x.

3. rearrange to get y=
then you will have the gradient

hopefully you know the rule connecting the gradients of perpendicular lines
4. I won't give you the answer, but it's pretty simple.

Rearrange 2x+3y=24 in the form of y=mx+c

When a line is perpendicular - m1 x m2 = -1

To work out the equation of a line use - y-y1=m(x-x1)

Substitute the x and y coordinates from the point (4,1) into the equation with your new gradient to get the answer to b.
5. (Original post by AspiringGenius)
x

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