Which of the following relations is not a function? a. {(7, 8), (8, 9), (9, 10), (7, 6)} b. {(7, 8), (8, 9), (9, 10), (10, 11)} c. {(7, 8), (8, 9), (9, 8), (10, 9)} d. {(7, 8), (8, 8), (9, 8), (10, 8)} pls

A.{(7, 8), (8, 9), (9, 10), (7, 6)}

Step-by-step explanation:

when graphing do the straight line test on the x axis with a pencil or something and if the pencil touches more than one dot than it is not a function.

another way is to just look at the numbers for the x axis and if any of the numbers are the same for example (4,6), (4,9) then it is not a function. an example of a function would be (8,9), (2,6).

step-by-step explanation:

if you want to solve percent error follow these steps.

1. subtract the accepted value from the experimental value.

2. take the absolute value of step 1.

3. divide that answer by the accepted value.

4. multiply that answer by 100 and add the % symbol to express the answer as a percentage.

if you want to solve percent of change just do this.

1. work out the difference (increase) between the two numbers you are comparing.

2. divide the increase by the original number and multiply the answer by 100. if your answer is a negative number then this is a percentage decrease.

hope this : )