Which number line represents all of the values of x for the equation x2 = 16? a: a number line is shown from negative 10 to 0 to positive 10. there are increments of 2 on the number line, and all these are increments are labeled. a dot is shown on positive 4 and is labeled as p. b: a number line is shown from negative 10 to 0 to positive 10. there are increments of 2 on the number line, and all these are increments are labeled. a dot is shown on positive 8 and is labeled as p. c: a number line is shown from negative 10 to 0 to positive 10. there are increments of 2 on the number line, and all these are increments are labeled. a dot is shown on positive 4, another dot is shown on negative 4, and are labeled as p and q, respectively. d: a number line is shown from negative 10 to 0 to positive 10. there are increments of 2 on the number line, and all these are increments are labeled. a dot is shown on positive 8, another dot is shown on negative 8, and are labeled as p and q, respectively.