For each of the following plots, interpret the y-intercept of the least-squares regression line if possible. If

Question:

For each of the following plots, interpret the y-intercept of the least-squares regression line if possible. If not possible, explain why not.

a. The least-squares regression line is ŷ = 1.98 + 0.039x, where x is the temperature in a freezer in degrees Fahrenheit, and y is the time it takes to freeze a certain amount of water into ice. image text in transcribed

b. The least-squares regression line is ŷ = −13.586 + 4.340x, where x represents the age of an elementary school student and y represents the score on a standardized test. image text in transcribed