QMI1500 Assignment 2 (QUIZ) Semester 1 2023

QMI1500 ASSIGNMENT 2
SEMESTER 1 - 2022
UNIQUE NUMBER: 746467


DUE DATE: 14 MARCH 2022

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, QUESTION 1

The equations of three quadratic functions are given below:




Determine the discriminant of each function and the number of x-intercepts that the
parabola has. Choose the correct sentence. The function described in

[1] (i) has no discriminant and the parabola has no x-intercepts

[2] (ii) has a negative discriminant and the parabola has two x-intercepts

[3] (i) has a zero discriminant and the parabola has one x-intercept

[4] (iii) has a positive discriminant and the parabola has one x-intercept



i.

For :

The discriminant [ ]

Therefore, it has only one x – intercept: (0; 0)



ii.

The discriminant [ ]

Therefore, it has two x – intercepts: (0 0)



iii.

The discriminant [ ]

Therefore, it has two x – intercepts: (0 0)



In conclusion, i. has a zero discriminant and the parabola has one x-intercept.


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