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

Fill in the Blanks

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