Question

8) What is the slope of the line below *

Answer 1

Horizontal lines have a zero slope, to check it, you can take two points through which the line passes and use the slope formula, that is,

`\begin{gathered} m=(y_(2)-y_(1))/(x_(2)-x_(1)) \\ \text{ Where m is the slope of the line and} \\ (x_1,y_1),(x_2,y_2)\text{ are two points which the line passes} \end{gathered}`

So for example if you take the points

`\begin{gathered} (x_1,y_1)=(-1,3) \\ (x_2,y_2_{})=(-3,3) \end{gathered}`

You have

`\begin{gathered} m=(y_(2)-y_(1))/(x_(2)-x_(1)) \\ m=(3-3)/(-3-(-1)) \\ m=(0)/(-3+1) \\ m=(0)/(-2) \\ m=0 \end{gathered}`

Therefore, the slope of this line is 0.