# How to answer these question ?

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In my old age I prefer avoiding explicitly writing the slope. The perpendicular family comes from swapping the coefficients on

So the perpendicular to

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Let, the **given lines** be

Let the **given point** be

Rewriting

that their **respective slopes** are

Knowing that,

Further,

**Enjoy Maths.!**

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See explanation below

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Given

By other hand, we know that our line is perpendicular to

Lets check the slopes of both lines

Slope of first line:

Slope of second line

We know that two perpendicular lines verifies

With

Finally

Our line is

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