Question

Does the point (–7, –9) satisfy the equation y = –2x − 5?

Answer 1

We are given the following equation

`y=-2x-5`

We need to substitute the (-7, -9) into the equation to find out whether it satisfies the equation or not.

x = -7

y = -9

`\begin{gathered} y=-2x-5 \\ -9=-2(-7)-5 \\ -9=14-5 \\ -9\\e9 \end{gathered}`

As you can see, -9 is not equal to 9

This means that the point (-7, -9) doesn't satisfy the given equation.