Problem 79. A circle has its center at (-4, 8), and just touches the y-axis (without crossing it). 1. Draw a diagram of the circle in the xy-plane. 124 10 ON 2. Write the equation of the circle. 3. Find the circumference and area of the circle. 91 Problem 80. A circle has its center at (-6, -4), and contains the point (-1, 8). 1. Draw a diagram of the circle in the xy-plane. 124 10 ON - 1 0 1 2. Write the equation of the circle. 3. Find the circumference and area of the circle