Which set of ordered pairs represents a function?
a {(0, 1), (1, 3), (1, 5), (2, 8)}
b {(0, 0), (1, 2), (2, 6), (2, 8)}
c {(0, 0), (0, 2), (2, 0), (2, 4)}
d {(0, 2), (1, 4), (2, 6), (3, 6)}

idk i would have to be there to under stand it

step-by-step explanation:

idk i would have to be there to under stand it

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)