Enter values for a and b that the system of equations show infinitely many solutions

Acircle has a diameter will endpoints of (-2,8) and (6, 4). what is the center of the circle

Sketch the region enclosed by the given curves. decide whether to integrate with respect to x or y. draw a typical approximating rectangle and label its height and width. y= 5x, y=7x^2then find the area s of the region.

Find the common ratio of the sequence. -4, 8, -16, 32, a: -12b: -2c: 12d: -1/-2