Waec Mathematics Past Questions For Year 2018

Question 16

The equation of the line through the points (4,2) and (-8, -2) is 3y = px + q, where p and q are constants. Find the value of p.

waec 2018

  • A. 1
  • B. 2
  • C. 3
  • D. 9
View Answer and Explanation

Question 17

If M and N are the points (-3, 8) and (5, -7) respectively, find |MN|

waec 2018

  • A. 8 units
  • B. 11 units
  • C. 15 units
  • D. 17 units
View Answer and Explanation

Question 18

The angles of a polygon are x, 2x, 2x, (x + \(30^o\)), (x + \(20^o\)) and (x - \(10^o\)). Find the value of x

waec 2018

  • A. \(45^o\)
  • B. \(95^o\)
  • C. \(84^o\)
  • D. \(85^o\)
View Answer and Explanation

Question 19

Factorise completely the expression

\((x + 2)^2\) - \((2x + 1)^2\)

waec 2018

  • A. (3x + 2)(1 - x)
  • B. (3x + 2)(2x + 1)
  • C. 3\((x + 2)^2\)
  • D. 3(x + 1)(1 - x)
View Answer and Explanation

Question 20

Solved the equation \(2x^2 - x - 6\) = 0

waec 2018

  • A. x = \(\frac{-3}{2}\) or 2
  • B. x = -2 or \(\frac{3}{2}\)
  • C. x = -3 or 2
  • D. x = 3 or -2
View Answer and Explanation