Which equation(s) represents a proportional relationship?
a) y=7x^2 b) y=2+3x
c) y=1/2x d) y= 5-x

show work

A and C are proportional relationships.

Step-by-step explanation:

Recall that a "proportional relationship" has no constant term.  Thus, we eliminate Answers B and D immediately.

Answer A represents a proportional relationship:  y varies directly with the square of x.

Answer C also represents a proportional relationship:  y varies directly with x.

point a is the center of the circle that passes through points e, f, and g and the center of the circle that passes through points x, y, and z.

probability for j is 1/4

while

a is 1/6