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How do you graph ##x-y=7## by plotting points?
Convert the equation to . Determine two points. Plot the points and draw a straight line through the points.
Rearrange the equation to -intercept form, ##y=mx+b##, where ##m## is the slope and ##b## is the y-intercept.
##x-y=7##
Subtract ##x## from both sides.
##-y=-x+7##
Multiply both sides by ##-1##.
##y=x-7##
Since this is a linear equation, only two points are needed.
Table of Points ##x=0,####y=-7## (y-intercept) ##x=7,####y=0## (x-intercept)
Plot the points on a graph and draw a straight line through the points.
graph{y=x-7 [-10, 10, -5, 5]}