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Need some AP calc help here

It's the first day of school and I already don't understand stuff ..
http://answers.yahoo.com/question/index?qid=20110908171915AA5StPN

Thanks to anyone who helps

September 9, 2011

2 Comments • Newest first

frostdrake54

use graph paper and draw the coordinates on there. If there is a resemblance of a line, figure out the slope of that line using the slope formula. then use that slope and solve for x when y=-1.

Reply September 9, 2011
DrHye

Just use the equation (y2-y1)/(x2-x1) using the two known coordinates to find the slope (that equation should definitely be familiar to you)

Then when you have the slope, you should be able to just figure out on your own what the x value is when y = -1

Reply September 9, 2011 - edited