Marquette played a game with her little brother Julio using the sum of two fair number cubes. She recorded how many times each sum came up in the chart below.
Which of the following statements is true if the theoretical probability of rolling a 7 is 1/6?
sum frequency
2 3
3 0
4 2
5 3
6 6
7 12
8 12
9 8
10 3
11 1
12 0

c. y = 1/4 x + 5

step-by-step explanation:

first, put the equation of the line on the graph into slope-intercept form

(y = mx + b):   y = -4x + 8

second, a perpendicular line has to have "an opposite/reciprocal slope" to the original slope. so, find the "m" value in your original equation (it's -4, right? )

original slope: m = -4   perpendicular slope: change the sign to its opposite and find the reciprocal ("flip" the number)

new slope is now positive (b/c the original slope was negative 4), and it's 1/4 (not the original slope of 4 or 4/1)