Graphs of polynomials - Jamb Mathematics Past Questions and Answers

Question 1:

• JAMB 1979

The mean of the numbers 1.2, 1.0, 0.9, 1.4, 0.8, 0.8, 1.2 and 1.1 is

A. 1.5
B. 0.8
C. 1.0
D. 1.02
E. 1.05

Question 2:

• JAMB 2017

If two graphs Y = px² + q and y = 2x² − 1 intersect at x =2, find the value of p in terms of q

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

Question 3:

• JAMB 1982

If the function y = 5x is graphed, what would be its intercept on the y-axis?

A. 5
B. \(\frac{1}{5}\)
C. 1
D. 2
E. Zero

Question 4:

• JAMB 1990

What is the equation of the quadratic function represented by the graph?

A. Y = x² + x - 2
B. Y = -x² - x + 2
C. Y = x² - x - 2
D. Y = -x² - x + 2

Question 5:

• JAMB 1994

The equation of the graph is

A. Y = (x - 3)³
B. Y = (x + 3)³
C. Y = x³ - 27
D. Y = -x³ + 27