Find the equation whose graph is shown below. Write your answer in standard form. (Standard form is Ax + By = C, where A is positive, and A, B, and C are integers with greatest common divisor 1.)
You can calculat the slope betqeen the two lines as ( y1-y2) / (x1-x) but the way this is drawn I think they want you to use
the 'rise over run ' method ( which is really the same thing )
from the L poin to the R point the rise is -2 the 'run' is 4 so rise/run = -2 / 4 = -1/2 which is the slope , m
slope intercept form of a line y = mx + b we found m = -1/2 'b' is the y -axis intercept at 4 (see it?)
so your line is y = -1/2 x + 4 re-arrange to the requested form
1/2x + y = 4 multiply thru by 2 to get rid of the fraction\
x + 2y = 8 Done!