ECZ 2010 · O-Level Paper 2 · Question 3 — Matrices

Question from ECZ 2010 · O-Level Paper 2 · Question 3

(a) Given that d = p + y5y, express y in terms of d and p.[3]

Verified working — step 1

Multiply both sides by 5y to clear the fraction.

(b) Given that 2x - 7y - 1 = 0, find the gradient of this equation.[1]

Verified working — step 1

Rearrange into the form y = mx + c.

(c) If P = 2061 and Q = a01b, find

(c(i)) PQ,[2]

Verified working — step 1

Multiply row into column.

(c(ii)) the values of a and b, given that PQ = P - Q.[3]

Verified working — step 1

P - Q = 2 - a051 - b.

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Original examination question © Examinations Council of Zambia. Worked solution and commentary © G12 Titan — not to be reproduced without permission.

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