[Image: Vertical number line ranging from negative 5 to 5.] On this number line, zero represents sea level. Plot the following points based on the description provided. • 1.5 above sea level • absolute value of –4.5 • –2 • opposite of 4 • absolute value of 1 • 2.5 below sea level • greatest common factor of 8 and 12 • –(–3) • -3 1/2 • opposite of –5 Please help.