Posted by peg on Wednesday, March 2, 2011 at 9:27am.
number of solutions:no more than the degree of the equation.
In the above, both x,y are degree one, so there is at most one real solution. THere maybe no solutions.
To solve, multiply the lower equation by 3, and you see that they are the same equation, which then has no solution, as the two lines are colinear (the same). It takes graphs that cross each other (intersect) to produce a solution.
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