If x = −7, which number line shows the value of |x|? A number line is shown from negative 7 to positive 7 with increments of 1. All the numbers are labeled on the number line. A dot is shown on a point at 7 tick marks to the left of 0. Above the number line, a bracket is shown extending from a point at 7 tick marks to the left of zero to a point at 7 tick marks to the right of zero. A horizontal line is shown between the brackets, and 7 is written on the line. A number line is shown from negative 7 to positive 7 with increments of 1. All the numbers are labeled on the number line. A dot is shown on a point at 7 tick marks to the left of 0. Above the number line, a bracket is shown extending from a point at 7 tick marks to the left of zero to a point at 7 tick marks to the right of zero. A horizontal line is shown between the brackets, and negative 7 is written on the line. A number line is shown from negative 7 to positive 7 with increments of 1. All the numbers are labeled on the number line. A dot is shown on a point at 7 tick marks to the left of 0. Above the number line, a bracket is shown extending from a point at 7 tick marks to the left of zero to a point at zero. A horizontal line is shown between the brackets, and 7 is written on the line. A number line is shown from negative 7 to positive 7 with increments of 1. All the numbers are labeled on the number line. A dot is shown on a point at 7 tick marks to the left of 0. Above the number line, a bracket is shown extending from a point at 7 tick marks to the left of zero to a point at zero. A horizontal line is shown between the brackets, and negative 7 is written on the line.