For this case we have that by definition, a linear equation is of the form:

The variable (s) involved in the equation always have exponent 1.
Some examples of linear equations are:

Answer:
In a linear equation the variables have exponent 1.

<u>Answer:</u>
11. g
12. f
13. e (add all the frequencies)
14. d
15. c (eg. 17.5 -8.5 = 9)
16. b
17. a
Let me know if you have any questions.
Hope this helps!
Answer:
since you know the amount he swims for 2 mins then divide that amount to get the amount for 1 minute. so 2=0.10 which means 1=0.5 since you halved it.
<em>Hope this helps!</em>