Decide whether the relation is a function.{(-5, 1), (-1, -7), (-1, -1), (-1, 7)}
A. Not a function
B. Function
Answer: A
Mathematics
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Provide an appropriate response.Solve the following system algebraically: 
Fill in the blank(s) with the appropriate word(s).
Mathematics
Indicate whether the graph of the equation is a parabola, circle, ellipse, or hyperbola.x + 140 + 60y = -6y2
A. parabola B. hyperbola C. circle D. ellipse
Mathematics
Determine whether the lines through each pair of points are perpendicular.(7, -1) and (21, 3); (10, 4) and (17, 6)
A. not perpendicular B. perpendicular
Mathematics
Find the indicated trigonometric function, where ? is the radian measure of the given angle. Give an exact answer with a rational denominator.Find tan ?.
A. 
B. 
C. 
D. 
Mathematics