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Write the equation of the line perpendicular to y=5/3x+2 that passes through the point (-3,5)

User Tharen
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1 Answer

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12 votes

Answer

The equation of the line in point-slope form is

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

We can simplify this to obtain the slope-intercept form

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

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

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

y = (-3x/5) + (16/5)

Then, to put the whole thing in a simplified equation form, we multiply through by 5

y = (-3x/5) + (16/5)

5y = -3x + 16

3x + 5y = 16

Step-by-step explanation

The general form of the equation in point-slope form is

y - y₁ = m (x - x₁)

where

y = y-coordinate of a point on the line.

y₁ = This refers to the y-coordinate of a given point on the line

m = slope of the line.

x = x-coordinate of the point on the line whose y-coordinate is y.

x₁ = x-coordinate of the given point on the line

So, we just need to compute the slope of this line since a point on the line has already been provided (-3, 5)

For two lines with slopes m₁ and m₂ that are perpendicular to each other, the slopes are related through the relation

m₁m₂ = -1

And the slope-intercept form of the equation of a straight line is given as

y = mx + b

where

y = y-coordinate of a point on the line.

m = slope of the line.

x = x-coordinate of the point on the line whose y-coordinate is y.

b = y-intercept of the line.

So, the slope of the line whose equation is given in the question is

m₁ = (5/3)

This is obtained by comparing y = mx + b with y = (5/3)x + 2

So, we can obtain the slope of the line that we need

m₁m₂ = -1

m₁ = (5/3)

m₂ = ?

m₁m₂ = -1

(5/3) × m₂ = -1

(5m₂/3) = -1

Cross multiply

m₂ = (-3/5)

So, we can write the equation in point-slope form now

Recall that

y - y₁ = m (x - x₁)

m = slope = (-3/5)

Point = (x₁, y₁) = (-3, 5)

x₁ = -3

y₁ = 5

y - y₁ = m (x - x₁)

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

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

Hope this Helps!!!

User Remmyabhavan
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