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 + (y-9)^2 = 5^2
center at (-8,9) radius 5 etc
1. for the given slope-inntercept 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+16x-18y+145=25
please show work
1 answer