How do you write the interval (1, 2) as an inequality involving x and show each inequality using the real number line?
When writing intervals as inequalities we need to remember that parentheses, like,
For this problem
On a number line put 1 and 2.
Put open circles at 1 and at 2.
Shade the region of between the circles.
(Not sure how to conveniently show that on here.)