Question
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Answer
All real numbers less than –2 satisfy the inequality.
Solution:
Graph:
<---|-----|-----|-----|-----|-----|-->
-4 -3 -2 -1 0 1
○---------------->
- The open circle at
indicates that is not included. - The arrow to the left shows all numbers less than
are part of the solution.
Solution
To solve the inequality
and graph the solution, follow these steps:
Step 1: Solve the Inequality
-
Start with the original inequality:
-
Subtract
from both sides to get all -terms on one side: -
Subtract
from both sides to isolate the term with : -
Divide both sides by
to solve for : This can also be written as:
Step 2: Graph the Solution on a Number Line
-
Draw a horizontal number line.
-
Mark the boundary point at
with an open circle (since the inequality is strict , meaning is not included). -
Shade the region to the left of
to represent all real numbers less than .
Graphical Representation:
<---|-----|-----|-----|-----|-----|-->
-4 -3 -2 -1 0 1
○---------------->
- The open circle at
indicates that is not included in the solution. - The arrow to the left shows that all numbers less than
satisfy the inequality.
Final Answer
All real numbers less than –2 satisfy the inequality.
Solution:
Graph:

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The Deep Dive
To solve the inequality
, we first isolate
. Start by subtracting
from both sides:
. Next, subtract 5 from both sides to get:
. Finally, divide by 7 (remembering to flip the inequality since we are dividing by a positive number):
.
To graph the solution, draw a number line and place an open circle at
, shading all values to the left, indicating that
can take any value less than
.
To double-check your work, plug in a number less than
(like
). If you substitute
into the original inequality, you’ll find it satisfies the condition. For any value greater than
, such as
, it won’t work, confirming your solution is accurate!