Question

Find the equation of the normal at P.

P = 3,4
P's gradient it 8

Answer 1

I also have the original equation before I dy'd by dx'd it?

Answer 2

@nincompoop

Answer 3

@Hero

Answer 4

@jim_thompson5910

Answer 5

@amistre64
@Callisto

Answer 6

normal lines are perpendicular to the tangent line

Answer 7

so say you had this curve

Answer 8

yeah

Answer 9

and you have a tangent here

Answer 10

the normal line at the same point of tangency would look like this