.
A(1,-2)
B(4,-2)
Determine the equation of circle A.

There were 816 people at a concert when a band started to play. after each song, only half the people stayed to hear the next song. how many people were left at the concert after x songs? write a function to represent this scenario.

Select a graph that have an equation with a < 0

In the xy-plane, if the parabola with equation passes through the point (-1, -1), which of the following must be true?