# Graphing Inequalities: Number Line Flashcards

1

Q

What does a solid Dot mean on a number line

(How do we know when to use it?)

What does a circle represent

(How do we know when to use it)

A

Solid dot means including that number

( Pac Man sign with a line underneath it)

Not including this number

(Regular Pac Man sign)

2

Q

X > 4 write this in intraval notation

A

(4, ∞)

3

Q

How do you write [-∞, 4]

A

X < 4

—

4

Q

X < 5

–‐–

A

( -∞, 5]

5

Q

If we multiply or divide an inequality by a negative number, what must we do to the equation

A

Reverse the direction of the inequality

6

Q

X + 8 < 5

A

(-∞, -3)

7

Q

In ordered pairs which is the “x” and which is the “y” value?

A

“X” Left & “Y” Right