This is the concept of median of statistical data, given that Mary was the 13th highest and the 13th lowest in the spelling contest it implies that the number of people was distributed as follows; 1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25 This implies that since the median of 25 is 13, then the total number of people in the contest was 25
Explanation: First, you want to multiply both of the numerators together. 3*8=24. Then, you want to multiply both of the denominators together. 5*9=45. If you put the numerator and the denominator together, it comes out to be 24/45. Lastly, you want to simplify 24/45. Divide those both by 3, and you get 8/15. Hope that helps!
If a line is parallel to x = -2, then it is a horizontal line. All horizontal lines can be written in the form of y = (a number). That number can be found as the y-coordinate in the ordered pair given.
