Library / /207 of 387

, 2003

Geometry Difficulty 2.0 Junior Find the answer Canada

The points $A(a,1)$ , $B(9,0)$ and $C(-3,4)$ lie on a straight line. The value of $a$ is

(A) $3$ (B) $\dfrac{8}{3}$ (C) $\dfrac{7}{2}$ (D) $6$ (E) $\dfrac{5}{2}$

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Source: CEMC, University of Waterloo, licensed CC-BY-NC-4.0. Statement reproduced verbatim; metadata (topic, difficulty) added by this project. Solutions are the publisher's, linked not copied.