Choose the correct options for the following questions.
Two parallel lines having equal angles of inclination $\theta_{1}=\theta_{2}$ then $m_{1}=$
Difficulty: Easy
A:
$m_{2}$
B:
$-m_{1}$
C:
$\frac{1}{-m_{1}}$
D:
$\frac{1}{m_{2}}$
If the line is parallel to the y-axis, then m is said to be:
Difficulty: Easy
A:
zero
B:
undefined
C:
1/2
D:
-1
The slope of the line from B(2,-3) through A(0,3) is:
Difficulty: Easy
A:
-3
B:
1/3
C:
0
D:
undefined
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