college algebra
posted by confusedsteve please on .
1. for the given slopeinntercept equation of the line with the following properties parallel to the line y=7; containing the (3,5)
2. write the equation of the circle in standard form. find the center, radius, intercepts.
x^2+y^2+16x18y+145=25
please show work

parallel to y =7 is a horizontal line
y = 0x + 5
or y = 5
complete the square a couple of times
x^2 + 16 x = y^2 + 18 y  120
x^2 + 16 x + 64 = y^2 + 18 y  56
(x+8)^2 + y^2  18 y = 56
(x+8)^2 + y^2  18 y + 81 = 25
(x+8)^2 + (y9)^2 = 5^2
center at (8,9) radius 5 etc