__Problem 1:__
Find the slope of the line that passes through the points (-1 , 0) and (3 , 8).

Detailed Solution.

__Problem 2:__
Find the slope of the line that passes through the points (2 , 0) and (2 , 4).

Detailed Solution.

__Problem 3:__
Find the slope of the line that passes through the points (7 , 4) and (-9 , 4).

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__Problem 4:__
Are the three points A(2 , 3) , B(5 , 6) and C(0 , -2) collinear?

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__Problem 5:__
What is the slope of the line parallel to the line whose equation is given by -y = - 2 x + 4?

Detailed Solution.

__Problem 6:__
What is the slope of the line perpendicular to the line whose equation is given by - 2y = - 8 x + 9?

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__Problem 7:__
Is the triangle whose vertices are the points A(0 , -1) , B(2 , 1) and C(-4 , 3) a right triangle?

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__Problem 8:__
What is the slope of the line -7y + 8x = 9

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__Problem 9:__
What is the slope of the line y = 9?

Detailed Solution.

__Problem 10:__
What is the slope of the line x = -5?

Detailed Solution.

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