Trigonometry I need number 9 please

Find the equation of the line with slope =8 and passing through (6,53) write your equation in the form y=mx+b

Is the figure congruent? yes or no?

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)