How do you find x given (2,4), (x,8) and slope is -2?
1 Answer
Jan 5, 2017
#x=0#
Explanation:
#(y_2-y_1)/(x_2-x_1)=m#
#x_1=2#
#x_2=x#
#y_1=4#
#y_2=8#
#(8-4)/(x-2)=-2#
#4/(x-2)=-2#
#1/(x-2)=-2/4=-2#
Reciprocate both sides
#(x-2)/1=-1/2#
#x-2=-2#
#x=-2+2=0#
#x=0#
