JAMB Mathematics 2017 Objective — Question 8

Question 8 of 40 from the Joint Admissions and Matriculation Board (JAMB) Mathematics 2017 Objective paper, with the correct answer and a full explanation.

If y varies directly as x, find the constant of the variation when y=12 and x=4.

• A. A. 8
• B. B. 6
• C. C. 5
• D. D. 3Correct

Explanation

y=kx, so k=y/x=12/4=3.

Advertisement