and explain how you got the answer

it HELPS alot

Find an equation for the linear function which has slope -10 and x-intercept -7

Can someone check if i did this correct. it’s number 4 if you’re wondering.

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)