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Find the equation of the line, given the following information:

Passes through (-9,3) and is perpendicular to
y=1/2x+6

1 Answer

6 votes

Answer:

y=2/5x + 33/5

Explanation:

To find the equation of the line that passes through the point (-9,3) and is perpendicular to y = 1/2x + 6, we can first find the slope of the given line y = 1/2x + 6. The slope of a line is equal to the rise (the change in the y-coordinate) divided by the run (the change in the x-coordinate), so we can find the slope of the line y = 1/2x + 6 as follows:

Slope = (change in y) / (change in x)

= (1/2 - 6) / (1 - 0)

= -5/2

Since the line we are looking for is perpendicular to the line y = 1/2x + 6, its slope must be the negative reciprocal of the slope of y = 1/2x + 6. The negative reciprocal of a number is equal to the negative of the reciprocal of the number, so the slope of the line we are looking for is equal to -1 / (-5/2) = 2/5.

Next, we can use the point-slope form of a line to find the equation of the line that passes through the point (-9,3) and has a slope of 2/5. The point-slope form of a line is given by the equation y - y1 = m(x - x1), where (x1, y1) is a point on the line and m is the slope of the line. Substituting the values for the given point and the slope into this equation, we get:

y - 3 = 2/5(x - (-9))

y - 3 = 2/5(x + 9)

Next, we can distribute the 2/5 on the right-hand side of the equation to get:

y - 3 = 2/5x + 18/5

Finally, we can combine like terms on both sides of the equation to get the final equation of the line:

y=2/5x + 18/5 + 3

y=2/5x + 33/5

User SigmaOmega
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