Introduction to Functions

Question 1

Which graph represents a function?

Revolt · Accepted Answer

[Image: On a coordinate plane, a straight horizontal line ...]

Question 2

all real numbers✔ all real numbers greater than or equal to –2{x: x = –2, –1, 0, 1, 2}X {y: y = –2, –1, 0, 1, 2}

Revolt · Accepted Answer

✔ all real numbers greater than or equal to –2

Question 3

What are the possible values of x and y for two distinct points, (5, –2) and (x, y), to represent a function?

Revolt · Accepted Answer

The value of x can be .: any real number except 5; The value of y can be .: any real number

Question 4

✔ any real numberany real number except –2any real number except 5 and –2

Revolt · Accepted Answer

✔ any real number

Introduction to Functions Answers