Byrd Summers
11/21/2023 · High School
Consider the line \( y=-9 x+6 \) Find the equation of the line that is parallel to this line and passes through the point \( (-2,6) \). Find the equation of the line that is perpendicular to this line and passes through the point \( (-2,6) \). Note that the ALEKS graphing calculator may be helpful in checking your answer. Equation of parallel line: Equation of perpendicular line:
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Since the given line has a slope of \(-9\), any line parallel to it will also have a slope of \(-9\). Using the point-slope form of a line, we have:
\[y - 6 = -9(x + 2)\]
Simplifying, we get:
\[y = -9x - 12\]
Therefore, the equation of the parallel line is \(y = -9x - 12\).
Since the given line has a slope of \(-9\), any line perpendicular to it will have a slope of \(\frac{1}{9}\) (the negative reciprocal of \(-9\)). Using the point-slope form of a line, we have:
\[y - 6 = \frac{1}{9}(x + 2)\]
Simplifying, we get:
\[y = \frac{1}{9}x + \frac{52}{9}\]
Therefore, the equation of the perpendicular line is \(y = \frac{1}{9}x + \frac{52}{9}\).
Quick Answer
Parallel line: y = -9x - 12. Perpendicular line: y = (1/9)x + 52/9.
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