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Data were collected on the distance a baseball will travel when hit by a baseball bat at a certain speed. The speed, s, is measured in miles per hour, and distance, y, is measured in yards. The regression line is given by ŷ = 4.17 + 52.45s.

Identify the slope and y-intercept of the regression line. Interpret each value in context.
The slope, b = 52.45, indicates that the distance increases by 52.45 yards for every one mile per hour of speed. The y-intercept, a = 4.17, is the distance estimated by this model if the speed is zero miles per hour.
The slope, b = 4.17, indicates that the distance increases by 4.17 yards for every one mile per hour of speed. The y-intercept, a = 52.45, is the distance estimated by this model if the speed is zero miles per hour.
The slope, b = 4.17, indicates that the distance decreases by 4.17 yards for every one mile per hour of speed. The y-intercept, a = 52.45, is the distance estimated by this model if the speed is one mile per hour.
The slope, b = 52.45, indicates that the distance decreases by 52.45 yards for every one mile per hour of speed. The y-intercept, a = 4.17, is the distance estimated by this model if the speed is one mile per hour.
The slope and y-intercept are unable to be determined from the regression line given.