Please help and please circle the answer to both

Example 4. We can use StatKey to view a scatterplot and regression line for each of the following pairs of quantitative variables from the FloridaLakes dataset: (1) pH vs. AvgMercury; (2) pH vs. Calcium. For which pair of variables is the regression line a more appropriate model? Florida Lakes.SIX PM(:) AvgMercury() . Show Data Table Be Outa Upload File Change Columnist Summary Statistics switch variables Statistic PH AvgMercury 1.2 6.591 0.527 Standard Deviation 1.286 0.341 Sample Size $3 Correlation -0.575 Slope -0.152 1.0 Intercept 1.531 Scatterplot Controls 0.9 Show Regression Line 3.5 (1) 4.0 4.5 5.0 5.5 6.0 6.5 7.0 7.5 8.0 8.5 9.0 Florida, Late Ask: PH(x) Calcium(x) . Show Bets Table Edit Outa Upload File Change Calummak Summary Statistics Sulich Variables Statistic PH Calcium 6.591 22.20 Standard Deviation 1.288 24.933 Sample Size 53 Correlation 0.577 70 Slope 11.168 Intercept -51.402 Scatterplot Controls Show Regression Line 30 20 (2) 3.5 4.0 5.0 5.5 6.0 6.5 7.0 7.5 8.0 8.5 9.0