A 2-column table with 4 rows. Column 1 is labeled Price with entries 3 dollars and 50 cents, a, b, c. Column 2 is labeled Gallons Purchased with entries 1, 3, 5, 7.
Mary Lou is with her mother at the gas station. She is trying to figure out how much it will cost to fill up the car’s gas tank. Use the unit rate to complete the table for the price of each quantity of gasoline.
a =
b =
c =

for finding the midpoint of any given 2 pair of points simply add the respective x coordinates with other x coordinate and the y coordinate with other y coordinate and divide them by 2

in your question it will be :

(3+1)/2 for the x coordinate of mid point i.e 2

[8+(-4)]/2 for the y coordinate of midpoint i.e 2

so coordinates of mid point of points (3,8) and (1,-4) will be (2,2)

the answer is:

mean: 6

mad: 2.14