Show that the equation represents a circle by rewriting it in standard form, and find the center and radius of the circle.
x2 + y2 + 8y + 11 = 0
standard form
center (x, y) = ( )
radius

The linear combination method is applied to a system of equations as shown. 4(.25x + .5y = 3.75) → x + 2y = 15 (4x – 8y = 12) → x – 2y = 3 2x = 18 what is the solution of the system of equations? (1,2) (3,9) (5,5) (9,3)