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

Question

campbell_st · Answer

have you drawn a diagram...?

anonymous · Answer

no, i havent

campbell_st · Answer

ok... 

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the shortest distance is the perpendicular distance

geerky42 · Answer

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?

anonymous · Answer

6?

campbell_st · Answer

that's it... well done

anonymous · Answer

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

geerky42 · Answer

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

campbell_st · Answer

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

anonymous · Answer

yeah the diagram definitely helped.