Graphs of polynomials - Jamb Mathematics Past Questions and Answers

Question 6:

• JAMB 1995

The graph of f(x) = x² - 5x + 6 crosses the x-axis at the points

A. (-6, 0), (-1, 0)
B. (-3, 0), (-2,0)
C. (-6, 0),(1, 0)
D. (2, 0), (3, 0)

Question 7:

• JAMB 1999

The shaded portion in the graph above is represented by

A. Y + x - x³ ≥ 0, y - x ≤ 0
B. Y - x + x³ ≥ 0, y - x ≤ 0
C. Y + x - x³ ≤ 0, y + x ≥ 0
D. Y - x + x³ ≤ 0, y + x ≥ 0

Question 8:

• JAMB 2001

If two graphs y = px\(^2\) + q and y = 2x\(^2\) -1 intersect at x = 2, find the value of p in terms q.

A. \(\frac{q-8}{7}\)
B. \(\frac{7-q}{4}\)
C. \(\frac{8-q}{2}\)
D. \(\frac{7+q}{8}\)

Question 9:

• JAMB 2004

The shaded area in the diagram above is represented by

A. {(x,y) : y - 3x < -6}
B. {(x,y) : y + 3x < 6}
C. {(x,y) : y + 3x < -6}
D. {(x,y) : y - 3x < 6}

Question 10:

• JAMB 2005

The diagram above is the graph of the function f(x). Determine the range of values of x for which f(x) \(\geq\) 0

A. X \(\leq\) 2
B. 0 \(\leq\) x \(\leq\) 2
C. -2 \(\leq\) x \(\leq\) 0, x \(\geq\) 2
D. X \(\leq\) -2, 0 \(\leq\) x \(\leq\) 2