exam Maths Puzzle Numerical Ability

Find the mean and the median.
-6, -3, 1, 5, 9, 18

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exam Other Question

Find the axis of symmetry. y = �x^2 � 8x + 1 � Explain what the value of the discriminant means to the graph of y = ax2 + bx + c Hint: Chose values of a, b and c to create a particular discriminant. Then, graph the correspon