Find the focus and the directrix of the parabola.y2 - 4x + 2y - 15 = 0
A. Focus: (-3, -1); directrix: x = -5
B. Focus: (-5, -4); directrix: y = -3
C. Focus: (-5, -1); directrix: x = -3
D. Focus: (0, -4); directrix: y = 8
Answer: A
Mathematics
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Find parametric equations for the line described below.The line through the points P(-1, -1, 3) and Q(-7, 6, -1)
A. x = t + 6, y = t - 7, z = 3t + 4 B. x = t - 6, y = t + 7, z = 3t - 4 C. x = -6t + 1, y = 7t + 1, z = -4t - 3 D. x = -6t - 1, y = 7t - 1, z = -4t + 3
Mathematics
For the given functions f and g, find the requested composite function.f(x) = 
, g(x) = 5x + 2;
Find (g ? f)(x).
A. x - 
B. x + 4
C. 5x + 8
D. x
Mathematics
Simplify the expression.
A. 2x2 B. 4x C. 4x2 D. 2x6
Mathematics
Find the slope of the line given the following graph, points, or equation(-6, 4) and (-1, 4)
A. m is undefined
B. m = 0
C. m = - 
D. m = 5
Mathematics