MAT 1100 Quantitative Reasoning Module 3 Lesson 2 Assignment 2

MAT 1100 Quantitative Reasoning Module 3 Lesson 2 Assignment 2
Student Name:
1) Decide whether the relation is a function.
a) {(-8, 2), (-8, 8), (-1, 8), (5, -7), (10, -8)} A) Function B) Not a function
Solution: Note that a function is a relationship in which each input has exactly one and unique output. Since, in
ordered pair (-8, 2) and (-8, 8), the input value is -8 and output values are 2 and 8 which are not unique. Hence,
the given relation is not a function.
b)
A) Function B) Not a function
Solution: Since, each input has exactly one and unique output. So the given relation is a function.
2) Give the domain and range of the each function.
a) b) f
Domain: [-3, 3] Domain: {4, 7, 12}
Range: [2, inf] Range: {13}
3) An equation that defines y as a function of x is given.
a) Solve for y in terms of x
b) replace y with the function notation f(x).

MAT 1100 Quantitative Reasoning Module 3 Lesson 2 Assignment 2
a) 5x - 6y = 5
Solution: Given 5x - 6y = 5
Gives,
b) 2x – 5y = 4
Solution: Given 2x – 5y = 4
Gives,
4) Evaluate each function.
a) Find f(7) = 4, b) Find f(-4) = -7