ALGEBRA - Jamb Mathematics Past Questions and Answers

Question 156:

• 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 157:

• JAMB 1982

A variable y is inversely proportional to x², when y = 10, x = 2. What is y when x = 10?

A. 2
B. 4
C. 100
D. 0.4
E. 0.1

Question 158:

• JAMB 1982

If K is a constant, which of the following equations best describes the parabola?

A. Y = kx²
B. X = y² - k
C. Y = k - x²
D. X² = y² - k
E. Y = (k - x)²

Question 159:

• JAMB 1983

If x is jointly proportional to the cube of y and the fourth power of z. In what ratio is x increased or decreased when y is halved and z is doubled?

A. 4:1 increase
B. 2:1 increase
C. 1:1 no change
D. 1:4 decrease
E. 3:4 decrease

Question 160:

• JAMB 1983

Solve the following equations 4x - 3 = 3x + y = x - y = 3, 3x + y = 2y + 5x - 12

A. X = 5, y = 2
B. X = 2, y = 5
C. X = 5, y = -2
D. X = -2, y = -5
E. X = -5, y = -2