Well, if you use the point on the graph that the two lines intersect the slopes would be defined by the y intercepts. This doesn't really help or answer your question, I'm just thinking out loud.
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If the lines are perpendicular, their slopes are negative reciprocals.If the lines are perpendicular, their slopes are negative reciprocals.If the lines are perpendicular, their slopes are negative reciprocals.If the lines are perpendicular, their slopes are negative reciprocals.
Slopes of perpendicular lines will be opposite reciprocals. This means that the slopes have opposite signs and that one is 1/ the other. For example, 2 and -1/2.
negative reciprocal slopes ---> the lines are perpendicular equal slopes ---> the lines are parallel
Those lines are perpendicular.Those lines are perpendicular.Those lines are perpendicular.Those lines are perpendicular.
of mutually perpendicular lines.