Waec Model Questions Vol1 2020 Mathematics Question 38

Practice objective / multiple choice question 38 from the 2020 Waec Model Questions Vol1 Mathematics examination.

Waec Model Questions Vol1 2020 Mathematics Objective / Multiple Choice Medium Difficulty
Question 38 WAEC_MODEL_QUESTIONS_VOL1 • 2020 • MATHEMATICS • objective

A quadratic function \(y = ax\\()^2 + bx + c\) passes through the points (1,2) and (3,10) and has its vertex at x = -1. Find the values of a, b, c and compute y when \(x = 5\). Express y as a fraction in lowest terms.

Answer Options

Correct Answer A. \(a = \(2/3\)\), \(b = \(4/3\)\), \(c = 0\), \(y = \(70/3\)\)
B. \(a = \(3/4\)\), \(b = \(2/3\)\), c = -1, \(y = \(68/3\)\)
C. \(a = \(1/2\)\), \(b = \(5/3\)\), \(c = 1\), \(y = \(65/3\)\)
D. \(a = \(5/6\)\), \(b = \(1/3\)\), \(c = 2\), \(y = \(73/3\)\)
Correct Answer
A
Correct Option:
\(a = \(2/3\)\), \(b = \(4/3\)\), \(c = 0\), \(y = \(70/3\)\)

About This Question

This is Waec Model Questions Vol1 2020 Mathematics Question 38. It is one of the objective questions from the 2020 Waec Model Questions Vol1 Mathematics examination.

Difficulty level: Medium .

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