Question

Find the slope of the line that passes through (4,2) and (2,1) which set up in the formula is correct? Select all that apply.

Answer 1

`\begin{gathered} slope=(1-2)/(2-4) \\ slope=(2-1)/(4-2) \end{gathered}`

Explanations:

The formula for calculating the slope of a line passing through the points (x1, y1) and (x2, y2) is expressed as:

`slope=(y_2-y_1)/(x_2-x_1)\text{ }or\text{ }(y_1-y_2)/(x_1-x_2)`

Given the coordinate points (4,2) and (2,1), the possible set up formulas are:

`\begin{gathered} x_1=4 \\ y_1=2 \\ x_2=2 \\ y_2=1 \end{gathered}`
`\begin{gathered} slope=(1-2)/(2-4) \\ slope=(2-1)/(4-2) \end{gathered}`

This are the slopes of the line formula