The graph shows the relationship between James’s resting heart rate and the number of hours he exercises per day. For every hour
of exercise, James’s resting heart rate decreases by about (1,5,15,20) beats per minute. His resting heart rate is about (50.5, 70, 77.5,82.5) beats per minute when he exercises 4 1/2 hours a day.
2 answers:
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Vertex: ( -1, -7 )
Focus: ( -1, -27/4 )
Axis of Symmetry: x = -1
Directrix: y = -29/4
X | Y
———
-3| -3
-2| -6
-1 | -7
0 | -6
1 | -3
Focus: ( -1, -27/4 )
Axis of Symmetry: x = -1
Directrix: y = -29/4
X | Y
———
-3| -3
-2| -6
-1 | -7
0 | -6
1 | -3