Co-ordinate Geometry: Slope of a Line

What is the correct formula for the slope of a line?

• $Slope\ =\ \frac{y_{2\ }-\ y_1}{x_{2\ }-\ x_1}$

• $Slope\ =\ \frac{x_{2\ }-\ x_1}{y_{2\ }-\ y_1}$

• $Slope\ =\ \frac{x_{2\ }-\ y_2}{x_{1\ }-\ y_1}$

• $Slope\ =\ \frac{y_{2\ }+\ x_1}{x_{2\ }+\ y_1}$

If two lines are parallel then that means their slopes are...

• Equal

• Perpendicular

• Negative

• Positive

If two lines are perpendicular then the product of their slopes equals...

• - 1

• 0

• $\frac{1}{2}$

• $-\frac{1}{2}$

Find the slope of the line that passes through:
(-4, 7) and (-6, -4)

• 2/11
• 13/2
• 3/10
• 11/2

Tags

CCSS.8.EE.B.6

CCSS.8.F.B.4

CCSS.8.SP.A.3

Find the slope of the line that passes through:
(-3, -4) and (7, 6)

• 0
• Undefined
• -1
• 1

Tags

CCSS.8.EE.B.5

Find the slope of the line that passes through:
(6,7) and (4,2)

• 2/5
• -5/2
• 5/2
• -1/2

Tags

CCSS.8.EE.B.5

Find the slope of the line that passes through:
(-2, 8) and (0, 8)

• 0
• -2
• 2
• 1/2

Tags

CCSS.8.EE.B.5

Find the slope of the line that passes through: 
(2, 4) and (6, 12)

• 1/2
• -1/2
• 2
• -2

Tags

CCSS.8.EE.B.5

Find the slope of the line that passes through:
(10, 1) and (5, 2)

• 1/5
• -1/5
• 5
• -5

Tags

CCSS.8.EE.B.5

Find the slope of the line that passes through:
(-12, -5) and (0, -8)

• 1/4
• -1/4
• 4
• -4

Tags

CCSS.8.EE.B.6

CCSS.8.F.B.4