Question 94992
Find the solution set for each equation, given the replacement set. 
One of the problems(not one he has to do) read as follows:
y=4x+1; {(2,-1), (1,5), (9,2), (0,1)}.
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Each of the pairs gives you values for x and for y .
You are to take one pair at a time and insert them into the equation to
see if you get a true result, as follows:
Looking at (2,-1) you would get: 
-1=4*2+1
-1=8+1
That is wrong
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Looking at (1,5) you would get:
5=4*1+1
5=4+1
5=5
That is right so that pair is a solution for the equation
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Looking at (9,2) you would get:
2=4*9+1
2=36+1
2=37
Not a solution for the equation.
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Try the other pairs and see what you get; good luck.
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cheers,
Stan H.