Find the value of y that makes y + 4,6,y, an arithmetic sequence.

In what form is the following linear equation written y=9x+2

The general form of the quetion of a circle is ax^2+by^2+cx+dy+e=0 where a=b=0 if the circle has a radius of three units and the center lies on the y axis which set of values of a, b, c, d, and e might correspond to the circle

Abcd is a square. what is the measure of angle bac