LIinear equations, slope, distance, midpoint

Multiple Choice

Which of these is the slope formula?

• $$m=\frac{x_2-x_1}{y_2-y_1}$$  

• $$m=\frac{y_2-y_1}{x_2-x_1}$$  

• $$m=\frac{x_2+x_1}{2},\frac{y_2+y_1}{2}$$  

• $$m=\sqrt[]{\left(x_2-x_1\right)^2+\left(y_2-y_1\right)^2}$$  

Multiple Choice

What is the slope of the line shown?

• $$m=-1$$  

• $$m=\frac{4}{3}$$  

• $$m=0$$  

• undefined

Match

Match the following points with the slope of the line between them.

• $$\frac{1}{2}$$  

• $$\frac{3}{2}$$  

• $$-\frac{3}{2}$$  

• $$-\frac{1}{2}$$  

• $$-\frac{5}{2}$$  

 (2, -2) and (4, -1)

(5, 4) and (3, 1)

(-6, 2) and (-8, 5)

(7, 2) and (9, 1)

(4, 1) and (2, 6)

•  (2, -2) and (4, -1)

• (5, 4) and (3, 1)

• (-6, 2) and (-8, 5)

• (7, 2) and (9, 1)

• (4, 1) and (2, 6)

Fill in the Blanks

What is the equation of the line shown?

Fill in the Blanks

What is the equation of the line shown?

Multiple Choice

What is the distance formula?

• $$d=\frac{y_2-y_1}{x_2-x_1}$$  

• $$d=\sqrt[]{\left(x_2-x_1\right)^2+\left(y_2-y_1\right)^2}$$  

• $$d=\frac{-b\pm\sqrt[]{b^2-4ac}}{2a}$$  

• $$d=\sqrt[]{\left(x_2+x_1\right)^2-\left(y_2+y_1\right)^2}$$  

Multiple Choice

You can think of the midpoint formula as the ________ the two points

• distance between

• slope of

• average of

• square root of