Which set of ordered pairs does not represent a function? A)\{(0, 9), (-1, -2), (-5, 2), (-3, 0)\}{(0,9),(−1,−2),(−5,2),(−3,0)} B)\{(0, -6), (-6, 5), (4, 5), (5, 7)\}{(0,−6),(−6,5),(4,5),(5,7)}
C)\{(0, 8), (-7, -1), (4, 8), (1, 5)\}{(0,8),(−7,−1),(4,8),(1,5)}
D)\{(4, -6), (9, -7), (9, -4), (6, 3)\}{(4,−6),(9,−7),(9,−4),(6,3)}

D

Step-by-step explanation:

(9,-7) and (9,-4). it is 2 Y for 1 X

Step-by-step explanation:

D. It fails the vertical line test when x=9.

d. bc = 12 and ef = 16

step-by-step explanation:

we are given that δabc : δdef such that .

also, it is given that

so, from the options, we need that .

a.

b.

c.  

d.

as, we can see that only option d gives the same ratio as i.e. .

hence, the possible lengths are bc = 12 and ef = 16.

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)