Find the Length of side effects and simplest radical form with a rational denominator

Which equation represents a proportional relationship that has a constant of proportionality equal to 1/5

If the endpoints of the diameter of a circle are (8, 6) and (2,0), what is the standard form equation of the circle? a) (x + 5)2 + (y + 3)2 = 18 (x + 5)2 + (y + 3)2 = 3.72 (x - 5)2 + (y - 3)2 = 18 d) (x - 5)2 + (y - 3)2 = 32

Graph the system of equations. {6x−4y=−244x−8y=−32 use the line tool to graph the lines.