Asked by Raluca
Find the POI (point of intersection) for the following set of lines:
y=4x-1 and y=3x+4
I know how to plot them on a graph, and find out the POI that way, but how can I find the POI through an equation?
y=4x-1 and y=3x+4
I know how to plot them on a graph, and find out the POI that way, but how can I find the POI through an equation?
Answers
Answered by
MathMate
y=4x-1 and y=3x+4
therefore
4x-1=3x+4
Solve for x. Then substitute the calculated value of x into one of the equations to find y.
therefore
4x-1=3x+4
Solve for x. Then substitute the calculated value of x into one of the equations to find y.
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