Two marks exercise problem IV — task. Mathematics State Board, Class 10.

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In each of the following, find the value of '$a$' for which the given points are collinear.

(i)	$(2,3)$, $(4,a)$, $(6, -3)$
(ii)	$(a, 2 - 2a)$, $(-a + 1, 2a)$, $(-4 - a, 6 - 2a$	or $\frac{i}{i}$

[Note: For the last problem enter integer answer value followed by fraction value.]

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10. Two marks exercise problem IV

(i)	\((2,3)\), \((4,a)\), \((6, -3)\)
(ii)	\((a, 2 - 2a)\), \((-a + 1, 2a)\), \((-4 - a, 6 - 2a\)	or $\frac{i}{i}$