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Q5. (a) On the same set of axes plot the graphs, in intervals of 1, of

y₁ = 2x² + 5x - 6 and y₂ = - x² - 2x + 8 in the range - 4 ≤ x ≤ 2.

Additional intermediate points may be plotted to aid the drawing of smooth curves.

Suggested: horizontal axis 2 cm = 1

Vertical axis 1 cm = 1 (12)

(b) Using the graphs plotted in Q5(a), for x and y, the system of equations:

y₁ = 2x² + 5x - 6

y = - x² - 2x + 8 (4)