For the data below, we could find the equation of the best-fit line to use an adult female's height in inches (x) to predict their weight in pounds (y). Suppose we wanted to use an adult female's weight to predict their height. Using the formula for the best-fit line as y' = a + bx where a is the y-intercept and b is the slope, find the value of the slope of the line that would allow us to use an adult female's weight to predict their height. Round final answer to two decimal places (hundredths place).

Height Weight

62 104

60 101

64 110

68 117

69 131

70 149