QMI1500 ASSIGNMENT 2 2021 ANSWERS

QMI1500



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QMI1500
(MEMORANDUM FOR ASSIGNMENT 2 SEMESTER 1)
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Elementary Quantitative Methods

Department of Decision Sciences




Assignment questions, Semester 1&2, 2021

Assignment: 02

Due date: 29 June 2021

Unique number: S1: 398332
S2: 370685

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ASSIGNMENT 02
Study material: Topics 2.3 - 4.4 in the Study Guide

Unique assignment number: S1: 398332, S2: 370685

FIXED DUE DATE: 29 June 2021




Important:

• This is a multiple-choice assignment that must be answered and submitted ONLINE using myUnisa.
Go to Assessment Info on the QMI1500 module site and follow the steps. Make sure that you
complete the submission process.

• Always keep your detailed workings in a file to be able to compare your solutions to the ones that
will be published on the QMI1500 module site on myUnisa after the due date. Also, keep a copy
of the options you have chosen, in case of a query.

• The due date of this assignment is fixed. No extension can be granted because the solutions will be
posted on the QMI1500 module site shortly after the closing date.




Question 1
The parabola
y

4

3

2

1

x
−2 −1 1 2 3 4 5 6
−1

−2




is described by the quadratic function
y = ax2 + bx + c.

Choose the INCORRECT statement:

Considering the properties of this parabola,

[1] the discriminant is less than zero.
[2] the equation of the axis of symmetry is x = 2.
[3] a < 0.
[4] c > 0.



2