Describe the function shown in the table.

x
y
3
–5
4
–3
5
–1
6
1
a.
as x increases by 1, y increases by 2.
b.
as x increases by 1, y decreases by 2.
c.
each x is multiplied by –2, and then 1 is added.
d.
one number less is subtracted from x each time.

Circle a has a diameter of 7 inches, a circumference of 21.98 inches, and an area of 38.465 square inches. the diameter of circle b is 6 inches, the circumference is 18.84 inches, and the area is 28.26 square inches. part a: using the formula for circumference, solve for the value of pi for each circle. (4 points) part b: use the formula for area and solve for the value of pi for each circle. (4 points)