Waec Mathematics Past Questions and Answers

Question 746:

• WAEC 2001

which of the following is not quadratic expression?

A. \(y = 2x^2 - 5x\)
B. \(y=x(x-5)\)
C. \(y = x^2 - 5\)
D. Y = 5(x-1)

Question 747:

• WAEC 2001

The graph of the curve \(y = 2x^2 - 5x - 1\) and a straight line PQ were drawn to solve the equation \(2x^2 - 5x + 2 = 0\)
What is the equation of the straight line PQ?

A. Y = -1
B. Y = 1
C. Y = 3
D. Y = -3

Question 748:

• WAEC 2001

Subtract (-y + 3x + 5z) from (4y - x - 2z)

A. 5y - 4x - 7z
B. 3y + 2x + 3z
C. -5y + 4x + 7z
D. 2x - 5y + 3z

Question 749:

• WAEC 2001

If \(y \propto \frac{1}{\sqrt{x}}\) and x = 16 when y = 2, find x when y = 24

A. \(\frac{1}{9}\)
B. \(\frac{1}{6}\)
C. \(\frac{1}{3}\)
D. \(\frac{2}{3}\)

Question 750:

• WAEC 2001

If 2x : (x +1) = 3:2, what is the value of x?

A. \(\frac{1}{2}\)
B. 1
C. \(1\frac{1}{2}\)
D. 3