Which number line represents all of the values of x for the equation x2 = 49? A number line is shown from negative 35 to 0 to positive 35. There are increments of 7 on the number line, and all these increments are labeled. A dot is shown on positive 7, another dot is shown on negative 7, and they are labeled as p and q, respectively. A number line is shown from negative 35 to 0 to positive 35. There are increments of 7 on the number line, and all these increments are labeled. A dot is shown on positive 7 and is labeled as p. A number line is shown from negative 35 to 0 to positive 35. There are increments of 7 on the number line, and all these increments are labeled. A dot is shown on positive 28, another dot is shown on negative 28, and they are labeled as p and q respectively. A number line is shown from negative 35 to 0 to positive 35. There are increments of 7 on the number line, and all these increments are labeled. A dot is shown on positive 28 and is labeled as p.