nikhilshokeen1 nikhilshokeen1 12-04-2020 Mathematics contestada Which of the following has a graph that is a straight line? (4 points) Select one: a. Equation 1: y = 2x + 7 b. Equation 2: y^2 = x − 1 c. Equation 3: y = 2x^2 + 4 d. Equation 4: y = 3x^3