Find the correlation coefficient.The test scores of 6 randomly picked students and the number of hours they prepared are as follows: 
A. -0.6781
B. 0.6039
C. 0.2015
D. -0.2241
Answer: B
Mathematics
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Find a linear equation whose graph passes through the given points. Write the equation in slope-intercept form.(-4, 7) and (1, -7)
A. y = - 
x - 
B. y = 
x - 
C. y = - 
x - 
D. y = 
x - 
Mathematics
Graph the function.y = 4 cot 
(x - ?)
A. 
B. 
C. 
D. 
Mathematics
Find the opposite of the number.
A. 
B. 27
C. 0
D. - 
Mathematics
Find the equation of the parabola determined by the given information.Focus at (0, 6), directrix y = -6
A. y = 
x2
B. y2 = 6x
C. y = 
x2
D. y2 = 24x
Mathematics