82 + 79 + 72 + 72 + 81 + 77 + 69= 532
532/7 = 76
The mean is 76
Assuming the equation is x^2 + y^2 = 1, then that's a circle, with radius 1, centered on the origin [0,0].
So there are two tangents at x = 0. They are y = 1, and y = -1 (horizontal lines).
There is one tangent at x = 1. It is x = 1 (a vertical line).
There is no tangent at x = 35, because the original equation has no solution at x = 35.
Answer:
B
Step-by-step explanation:
The correlation coefficient is -0.92 which is a negative and it is less than a weak correlation.
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