The graph below compares life expectancy in years and the average number of cigarettes smoked per day .What type of trend line would best fit the data? O a horizontal line O a line with a positive slope O a line with a negative slope O no trend line
According to the given graph, the type of trend line that would best fit is a line with a negative slope. The graph clearly shows a linear relationship, and given that it's going down, we deduct that its slope is negative.
