Question

What is the distance from the line x+y=-7 to the point (4, -1) ?

Answer 1

I think it should be done with the dot product but it seems that I forgot how to do it :(, lets google!

Answer 2

do you think google can answer this :((((((

Answer 3

google knows everything :-)
Found a formula already:
rearranging the line : x+y+7=0 (4,-1)
D=modulus(4*1+(-1)*1+7)/sqrt(1^2 +1^2)=
=10/sqrt2

Answer 4

Slope of line is -1 so slope of perpendicular is 1

Get a line with that slope through (4,-1)

Answer 5

@kris100 is that u mr aringo?

Answer 6

@nudnick Why ?

Answer 7

@nudnick who are you?