THE LAINAKU JOINT ASSESSMENT
THE LAINAKU JOINT ASSESSMENT
THE LAINAKU JOINT ASSESSMENT
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. Find A when (2 marks)<br />
c. If B is increased by 30% and C decreased by 36% find the percentage change in A (6 marks)<br />
24. (a) Using a scale of 1cm represents on the x-axis and 4cm represents I unit on the y-axis draw the<br />
graphs of y = ½ sin 2x and y = sin x for 0 ≤ x ≤ 360 on the same set of axes<br />
(7mks)<br />
x<br />
½ sin 2x 0.00 0.43 0.00 -0.43 0.43 0.00 -0.43<br />
sin x 0.00 0.5 0.87 0.00 -0.87 -0.87 0.00<br />
© The Lainaku Joint Assessment www.kcse-online.info<br />
Mathematics 121/2 Turnover Page 14 of 15
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