In a direct variation, the constant of proportionality is -3. Which of the following would be its equation?

-3 = xy
-3 y = x
y = x - 3
y = -3 x

52 cm radius = diameter = area = circumference = circumfer

Identify the expression equivalent to 4(x + x + 7) − 2x + 8 − 4 by substituting x = 1 and x = 2.

Four equations are shown below.equation 1: y=2*equation 2: y=2x-5equation 3: y=x2 + 6equation 4: tdentify one linear equation and one nonlinear equation from the list.why each equation you identified is linear or nonlinear.nd one nonlinear equation from the list. state a reasonlinear equation