A scientist created a scatter plot to represent the heights of four plants over time. Then, she found a line of best-fit to model the height in centimeters of each plant after x days. The equations of each trend line are given in the table. Trend Line Equations Plant Equation of trend line 1 y = three-halves x + three-halves 2 y = 2 x + 1 3 y = one-half x + 3 4 y = three-halves x + 1 According to the trend line equations, which plants are growing at the same rate per day?