Question 9

(a) Copy and complete the table for \(y = 3x^{2} - 5x - 7\)

x -3 -2 -1 0 1 2 3 4
\(y = 3x^{2} - 5x - 7\) 35     -7 -9   5  

(b) Using a scale of 2cm = 1 unit along the x- axis and 2cm = 5 units along the y- axis, draw the graph of \(y = 3x^{2} - 5x - 7\).

(c) On the same axis, draw the graph of \(y + 3x + 2 = 0\).

(d) From your graph, find the : (i) range of values of x for which \(3x^{2} - 5x - 7 < 0\) ; (ii) roots of the equation \(3x^{2} - 2x - 5 = 0\).

 

Theory

Question details

Exam body
WAEC
Subject
Mathematics
Year
1996
Question no.
#9
Type
Theory

More from this paper

See all Mathematics 1996 questions