How do you know if a scatter plot shows a linear relationship?

In the points on the scatter-plot are close together and resemble a line. If you cannot see a line, that means there is not correlation. A line going down is negative correlation, and a line going up is positive correlation.

69 i think because is the only one square

29. because you will divide each number of months by 12 to find the number of years. which would mean, 5, 12.5, 16, 45, 50, 72.5. which is crazy. anyhow, i think you find the median in the middle. and yea hope your test goes good