If (a, -2) is a solution of the graph 3x - y = 10, then the value of a =
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Answer:
2
Step-by-step explanation:
x=a,y=-2
3x - y=10
3(a) -(-2)=10
3a+4=10
3a=10-4
3a=6
a=6/3
a=2
Therefore a=2
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