Answer:
Explanation:
The input/output rule or pattern rule is a set of commands that determines what the next input or output value will be. In this example:
input output
840 42
800 40
760 38
720 36
680 34
pattern
input: The input decreases by 40 as we progress down the table. Subtract 40 from the previous input value to get the next input value
output: The output value is gotten by dividing the input by 20. for example; 840÷20 = 42, 800÷20 = 40 etc.