exam Maths Puzzle Numerical Ability

9) Solve
0.8x+8 <= 1.2x-9

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exam Other Question

please help me determine what M is if M=Log(8) 2+log81(27)-log(5)25+log(9)1 Just a quick question, why is it true that when you find 2 point satisfying a linear equation that you will have same graph for the line represented by the equation??