QMI1500
Elementary Quantitative Methods
Department of Decision Sciences
Assignment 02 for 2021 (compulsory)
DUE DATE: 29 June 2021
Question 1
The parabola
is described by the quadratic function
𝑦 = 𝑎𝑥 2 + 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.
Answer:
A parabola is the curve that is produced by graphing a quadratic or second-degree equation.
We have two real roots in the graph: 𝑥 = −1 and 𝑥 = 5.
The discriminant: 𝐷 > 0.
Elementary Quantitative Methods
Department of Decision Sciences
Assignment 02 for 2021 (compulsory)
DUE DATE: 29 June 2021
Question 1
The parabola
is described by the quadratic function
𝑦 = 𝑎𝑥 2 + 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.
Answer:
A parabola is the curve that is produced by graphing a quadratic or second-degree equation.
We have two real roots in the graph: 𝑥 = −1 and 𝑥 = 5.
The discriminant: 𝐷 > 0.
