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Write the equation of a line through of (-1,-5), perpendicular to y = 1/9x + 5

User Menol
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1 Answer

4 votes

Jacob, this is the solution:

y = 1/9x + 5

Let's recall that:

• The equation of the line in the slope-intercept form is y = x/9 + 5.

,

• Let's recall that the slope of the perpendicular line is negative inverse: m=−9.

,

• So, the equation of the perpendicular line is y = −9x + a.

,

• To find a, we use the fact that the line should pass through the given point: −5 =(−9)*(−1) + a.

Therefore, a = 14

Finally, the equation of the line is y = −9x −14.

User Pherdindy
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