Tell whether each graph shows a positive linear association, a negative association, a non-linear association, or no association

Simplify a7/a4 a) 1/a3 b)-a/a2 c)a4/a3 d)a3

Bring the fraction a/a-4 to a denominator of 16-a^2

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