Answer:
Step-by-step explanation:
it 4
graph B ( the lower one )
for a function to be defined there can only be one value of y for each value of x
graph A has more than 1 value of y for given values of x
for example ( - 1, 4 ) and ( - 1, - 4 ) thus is not a function
graph B only has 1 value of y for a given value of x thus is a function
Answer:
Step-by-step explanation:
<u>Solution 1:</u>
Notice the 
coordinate of both points are equal, meaning both points are on a vertical line. The distance between two points on a vertical line is the absolute difference of their y-coordinates. The absolute difference between 
and 
is 
.
<u>Solution 2:</u>
The distance between two points 
and 
is:
Plugging in given values, we have:
.
