When graphing a linear inequality, how do you know if the line should be dotted or solid?

i hope this helps  :)

Step-by-step explanation:

if you are going to graph an inequality, then treat the  ≤, <, >, or ≥ sign as an = sign, and then graph the equation. If the equation says the inequality is < or >, then graph the equation as a dotted line. If the equation says the inequality is ≤ or ≥, then you are going to graph the equation as a solid line.

answer: (c) m∠qpo + (2x + 16)° = 180°

step-by-step explanation:

the opposite angles of a quadrilateral are supplementary.

so, ∠o + ∠q = 180°   and   ∠p + ∠r = 180°

since ∠r = 2x + 16°, we can use substitution as follows:

∠p + ∠r = 180°

∠p + (2x + 16)° = 180°