Choose the correct options for the following questions.
The equation of the line through (-8,5) having slope undefined is:
Difficulty: Easy
A:
y+8-0
B:
y=8
C:
y=x+8
D:
x+8=0
The reduction of the equation $x+\sqrt{3}y+4=0$ in the normal form is:
Difficulty: Easy
A:
$x\cos 120^{\circ}+y\sin 120^{\circ}=2$
B:
$x\cos 270^{\circ}+y\sin 270^{\circ}=2$
C:
$x\cos 30^{\circ}+y\sin 30^{\circ}=2$
D:
$x\cos 240^{\circ}+y\sin 240^{\circ}=2$
The equation of the line which passes through the point (-2,-1) and is perpendicular to the line 3x+y=5 is:
Difficulty: Easy
A:
2x-2y+3=0
B:
2x-7+y=0
C:
3x-y-5=0
D:
None
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