To graph an inequality on a number line, you first need solid number line basics — knowing where numbers sit and which way is bigger. Warm up the number line and comparing numbers, and graphing inequalities is just shading the right direction.
Answer these 3, then press Show my path. No grade — this just points you to the right level.
1. On a number line, which number is farther right?
2. Numbers on a number line get bigger as you move…
3. Which symbol is true? 4 ___ 9
On a number line, numbers go in order from left to right. Numbers get bigger to the right and smaller to the left. To graph n > 3, you shade all the numbers bigger than 3 — to the right.
Your quick check picks one for you, but you can switch any time:
Level 0 Read the number line.
A. On the line 0 1 2 3 4 5, what number is just to the right of 3?
Moving right adds 1: after 3 comes 4.
B. What number is just to the left of 3?
Moving left subtracts 1: before 3 comes 2.
C. Which number is bigger: 1 or 6?
6 is farther right on the number line, so 6 is bigger.
Level 1 Which side gets shaded?
A. To graph n > 5, you shade numbers…
Greater than means bigger, and bigger numbers are to the right.
B. To graph n < 2, you shade numbers…
Less than means smaller, and smaller numbers are to the left.
Level 2 Is the number part of the graph?
A. Is 6 part of the graph of n > 4?
6 > 4 is true, so 6 is shaded.
B. Is 4 part of the graph of n < 4?
n < 4 means strictly smaller than 4, and 4 is not smaller than itself.
1. To graph n > 2, shade numbers…
Greater than = bigger = right side of the line.
2. Is 1 part of the graph of n < 3?
1 < 3 is true, so 1 is shaded.
You've practiced exactly what Lesson 7-5 uses. Time to dive in.
Start Lesson 7-5 →