Which equation represents a linear function?
equation 1: y=2^2 +1
equation 2: y^2 = 3x + 1
equation 3: y=5x - 1
equation 4: y= 4x^4 - 1

(can only be ! )

Thomas is using a drawing program to complete a construction. which construction could he be completing? two perpendicular lines are drawn. inscribing an equilateral triangle in a circle inscribing a square in a circle inscribing a regular pentagon in a circle inscribing a regular hexagon in a circle