Im trying to do IXL and I dont understand the way my teacher teaches (ironic right?)
the points (-2,-10) and (8,r) fall on a line with a slope of 1/10. What is the value of r?
Use the formula slope= y-y/x-x -10-r/-2-8= 1/10 -10-r/-10= 1/10 Multiply the denominator (-10) on both sides -10-r= -1 Add -10 to both sides -r= 9 r= -9 Hope this helps!
