Lesson 2.3: Graphing and Application of Functions

Question 1

Vertical Line Test

Answer 1

A test that gives a quick and effective visual to decide if a graph is a function

Question 2

Linear Function

Answer 2

specific type of function that represents the relationship between two variables, usually x and y

Question 3

Function Notation

Answer 3

f(x); easy way to read and understand functions

Question 4

Scale

Answer 4

numbers counted by on the graph

Question 5

Independent Variable

Answer 5

x variable; variable whose values are independent of changes in the values of other variables

Question 6

Dependent Variable

Answer 6

mathematical expression whose value depends on the independent variable; y variable = f(x) (“f of x”) depends on the value of x

Question 7

Y-intercept

Answer 7

The y-intercept is where the relationship begins, when the input is 0.

Question 8

Slope

Answer 8

The slant or steepness of a straight line.

Question 9

Parallel Lines

Answer 9

lines with the same slope, but never meet, and have different y-intercepts

Question 10

Perpendicular Lines

Answer 10

Intersect at 90 degrees and their slopes are negative reciprocals of each other.

Question 11

Rate of Change

Answer 11

Tells how one quantity changes as the other changes.

Question 12

Relate

Answer 12

To connect things together

Question 13

Identify

Answer 13

to pick something out; say what something is

Question 14

Appropriate

Answer 14

suitable or proper in the circumstances

Question 15

Calculate

Answer 15

to figure out something mathematically