Mrs. Pierce conducted a survey in her class on the ages of famous people. The table shows the results of the survey. Please help

Which equation could represent the line of best fit for the given data set?

Select the correct answer from each drop-down menu. a system of equations and its solution are given below. system a complete the sentences to explain what steps were followed to obtain the system of equations below. system b to get system b, the equation in system a was replaced by the sum of that equation and times the equation. the solution to system b the same as the solution to system a.]