SOLUTION: without graphing, can you use the slope to determine whether there is a solution for a system of two linear equation in two unknowns?
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Question 732766: without graphing, can you use the slope to determine whether there is a solution for a system of two linear equation in two unknowns? Answer by stanbon(75887) (Show Source):
You can put this solution on YOUR website! without graphing, can you use the slope to determine whether there is a solution for a system of two linear equation in two unknowns?
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yes.
If the slopes are not equal the lines intersect at one point.
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If the slopes are equal and the y-intercepts are not equal the lines are parallel
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If the slopes are equal and the y-intercepts are equal the lines are the same line
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Cheers,
Stan H.
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