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Post-UTME Mathematics 2010 Objective — Question 3

Question 3 of 10 from the Post-UTME Screening (Post-UTME) Mathematics 2010 Objective paper, with the correct answer and a full explanation.

Find the equation of a line with gradient -2 passing through the point (1,2).

A. y=4-2xCorrect
B. y=4x+2
C. y=2x+4
D. y=-2x-2

Explanation

Using y-y1=m(x-x1): y-2=-2(x-1), y=2-2x+2=4-2x.

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