algebra

solve system graphically. be sure to check your solution. if a system has infinite number of solutions, use set builder notation to write the solution det. if a system as no solution, state this. a=1+b b=5-2a

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  1. b = 5 - 2 (1+b)
    b = 5 - 2 - 2 b
    3 b = 3
    b = 1
    a = 1+b = 2

    these are straight lines
    choose some values for b and find a for each equation then find intersection at a = 2 and b = 1

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