Write the slope-intercept form of the equation for the line passing through the given pair of points.(-6, -9) and (0, -2)
A. y = - 
x - 2
B. y = 
x - 2
C. y = 
x - 2
D. y = - 
x - 2
Answer: B
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Simplify the given expression. Expansion of any term is not necessary; proper recognition of the form of the expression leads to the proper result.2 cos2 4x - 1
A. 
sin 16x
B. 2 sin 4x
C. cos 8x
D. cos 4x
Find the slope of the line with the given inclination. Round your answer to the nearest thousandth, if necessary.45°
A. 1
B. 
C. -1
D. 
Solve the problem.A window is in the form of a rectangle surmounted by a semicircle. The rectangle is of clear glass, whereas the semicircle is of tinted glass that transmits only one-fifth as much light per unit area as clear glass does. The total perimeter is fixed. Find the proportions of the window that will admit the most light. Neglect the thickness of the frame.
A. 
= 
B. 
= 
C. 
= 
D. 
= 
Use Pythagorean identities to find the indicated function value.cot ? = -3, 270° < ? < 360°; find csc ?
A. -10 B. -2 C. -8 D. -4