Which of the following represents a function?
PLEASE HELP 15 POINTS OR BRAINLIEST PLEASE HELP ME

A

Step-by-step explanation:

a function is when the value of x is not repeated

in the other choices you can see that some coordinates have different y-values but some of the x-values are the same

A is the only one in which the x-value is not repeated

A

Step-by-step explanation:

A function is an equation which results in 1 y value for every x value,

Therefore lets eliminate the answers that have repeating x values

A - This is a function, all x values have one output (y value)

B - This is not a function, the x value of 1 repeats meaning theres

more than 1 corresponding output or y value

C - This is not a function, the x value 0 repeats

D - This is not a function, the x value(s) -1 and -2 repeat

Therefore A represents a function and the others do not.

Hope this helps

where is the diagram? shown below where? ?

step-by-step explanation:

step-by-step explanation:

points a and b are equidistant from the desired line, so the line you find by using them will go through point r.

using points other than a and b will give the desired line only if they are equidistant from r. if they are randomly located, the perpendicular line you create will not necessarily go through point r, hence will not be a solution to the problem.