Question

solve the inequality and graph the solution. 2a - 4 < 4 plot the endpoints. select an endpoint to change it from closed to open. select the middle of the segment, ray, or line to delete it.

Explanation:

Step1: Add 4 to both sides

$2a - 4+4<4 + 4$
$2a<8$

Step2: Divide both sides by 2

$\frac{2a}{2}<\frac{8}{2}$
$a < 4$

To graph, we use an open - circle at $a = 4$ (since the inequality is $<$ not $\leq$) and draw an arrow to the left on the number line.

Answer:

$a < 4$; On the number line, an open - circle at 4 and an arrow pointing to the left.