Question 66:

• WAEC 2017

A straight line 2x+3y=6, passes through the point (-1,2). Find the equation of the line.

A. 2x-3y=2
B. 2x-3y=-2
C. 2x+3y=-4
D. 2x+3y=4

Question 67:

• WAEC 2017

\(\alpha\) and \(\beta\) are the roots of the equation \(2x^{2} - 3x + 4 = 0\). Find \(\alpha + \beta\).

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

Question 68:

• WAEC 2017

The function f: x \(\to \sqrt{4 - 2x}\) is defined on the set of real numbers R. Find the domain of f.

A. \(x
B. \(x \leq 2\)
C. \(x = 2\)
D. \(x > -2\)

Question 69:

• WAEC 2017

Given that \(f(x) = \frac{x+1}{2}\), find \(f^{1}(-2)\).

A. -5
B. -3
C. \(-\frac{1}{2}\)
D. 5

Question 70:

• WAEC 2017

Given that \(\frac{6x+m}{2x^{2}+7x-15} \equiv \frac{4}{x+5} - \frac{2}{2x-3}\), find the value of m.

A. 20
B. 12
C. -10
D. -22