monicamcastillo monicamcastillo 31-03-2018 Mathematics contestada Which equation represents a linear function? (1 point) Equation 1: y = 2x2 + 1 Equation 2: y2 = 8x + 1 Equation 3: y = 5x3 − 1 Equation 4: y = 7x − 1 Equation 1 Equation 2 Equation 3 Equation 4