Find parametric equations for the line described below.The line through the point P(-7, 4, 4) and perpendicular to the vectors 
and 
A. x = -59t - 7, y = -47t + 4, z = -84t + 4
B. x = -59t - 7, y = 47t + 4, z = -4t + 4
C. x = -59t - 7, y = 47t + 4, z = -84t + 4
D. x = -59t + 7, y = 47t - 4, z = -4t - 4
Answer: C
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Indicate whether the equation represents direct variation, inverse variation, or neither. If it is a variation equation, identify the constant of proportionality.xy = 12
A. inverse variation; k = 12
B. neither
C. inverse variation; k = 
D. direct variation; k = 12
Solve the exponential equation. Round to three decimal places when necessary.(3.3)x = 45
A. 3.188 B. 3.312 C. 3.176 D. 3.201
If possible, factor the polynomial completely. If a polynomial cannot be factored, state that it is prime.81x2 - 25
A. (9x + 5)2 B. (9x - 5)2 C. Prime D. (9x + 5)(9x - 5)
Two points on L1 and two points on L2 are given. By computing the slope of L1 and L2, determine whether the lines are parallel, perpendicular , or neither. L1: (3, 2), (6, 5); L2: (-1, 2), (-4, -1)
A. parallel B. perpendicular C. neither