Which of the following has a graph that is a straight line? (4 points) Equation 4: y = 3x3 Equation 3: y = 2x2 + 4 Equation 1: y = 2x + 7 Equation 2: y2 = x − 1

The equation of the line: y = mx + b.

Therefore your answer is Equation 1: y = 2x + 7.