Question

find the distance, in units, from point A(3,7) to the line x=9.

Answer 1

have you drawn a diagram...?

Answer 2

no, i havent

Answer 3

ok...



the shortest distance is the perpendicular distance

Answer 4

Another angle is to note that A(3,7) lies on line x=3, which is parallel to x=7.

What is distance between x=3 and x=7, in other words, what is distance between 3 and 7?

Answer 5

6?

Answer 6

that's it... well done

Answer 7

so that's the distance from the point to the line? that was easy lol

Answer 8

oops x=9, not x=7...

Answer 9

lol.... diagrams help a lot... there is a formula... called perpendicular distance from a point to a line formula is the line was something like y = 3x - 2

but try to start by drawing it... and then see what you need to do

Answer 10

yeah the diagram definitely helped.