To solve the inequality
Starting with:
We can multiply both sides by 2 (since 2 is positive, the direction of the inequality remains the same):
This can also be written as:
Now we have the solution
Graphing the Solution
- Plot the endpoint: The endpoint in this case is
. - Choose the type of endpoint: Since the inequality is strict (less than), we will use an open circle at
to indicate that 6 is not included in the solution. - Shade the region: Since
, we will shade everything to the left of 6 on the number line.
Final Representation
The number line would look like this:
<----(6)-------------------
- The open circle at
indicates that is not included in the solution. - The shaded area to the left of
indicates all values of that satisfy the inequality .