On a map, Elmwood Drive passes through R(4, -11) and S(0, -9) and Taylor Road passes through J(6,-2)and K(4,-5). If the streets are straight lines, without graphing, determine if the streets are parallel orperpendicular. Explain your answer.

Respuesta :

The streets are neither perpendicular nor parallel

Here, we want to determine if the streets are parallel

To get this, we will need to get the slope of the two roads

If the streets are parallel, their slope will be equal. However, if the streets are perpendicular, the product of their slopes will be equal to -1

Let us proceed to find the slopes of both streets

Mathematically, we can use the equation below to find the slopes of the streets;

[tex]\begin{gathered} \text{For Elmwood Drive;} \\ m_{1\text{ }}\text{ = }\frac{y_2-y_1}{x_2-x_1} \\ \\ m_{1\text{ }}=\frac{-9-(-11)}{0-4}=\frac{2}{-4}=-\frac{1}{2}\text{ } \\ \\ \text{For Taylor Road;} \\ \\ m_2\text{ = }\frac{y_2-y_1}{x_2-x_1}\text{ = }\frac{-5-(-2)}{4-6}\text{ = }\frac{-3}{-2}\text{ = }\frac{3}{2} \end{gathered}[/tex]

From the slopes calculated, we can see that the streets are neither perpendicular nor parallel. This is because the products of their slopes is neither equal to -1 nor the slopes are equal

Q&A Education