33. Slope 4; point (1, 2) 34. Slope 2; point (-2, 3) 3 35. Slope - point (2, -4) 36. Slope point (-3, 2) 37. Slope -2; point (-2, –3) 38. Slope -1; point (4, 1)

Exercises 83–86: The table lists data that are exactly linear. a. Find the slope-intercept form of the line that passes through these data points. b. Predict y when x = -2.7 and 6.3. Decide if these calculations involve interpolation or extrapolation. -3 -2 -1 1 83. y -7.7 -6.2 -4.7 -3.2 -1.7

Question 24

Suppose a researcher collects data on the air pollution levels, measured in milligrams per cubic meter, for both urban and rural areas in 35 states. The data is plotted with urban air pollution levels on the horizontal axis and rural air pollution levels on the vertical axis. Nevada is an outlier in the ?x‑direction. What must be true about this state? The urban air pollution levels for this state are much higher or lower than the rest of the states in the data set. The rural air pollution levels for this state are much higher or much lower than the rest of the states in the data set. This state is an influential observation. The rural air pollution levels for this state are much higher or lower than other states in the data set that have similar urban air pollution levels. The absolute value of the residual of this state is large.