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Write the equation of the line that passes through the point (3, 6) and is perpendicular to7x = -4y +6.

User Simon Warta
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1 Answer

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12 votes

Answer

Equation of the line is

7y = 4x + 30

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, to write the equation of the line, we need the slope of the line and a point on the line.

We already have (3, 6) as the point.

For the slope,

Two perpendicular lines with slopes m₁ and m₂ are related according to the relationship

m₁m₂ = -1

For the line whose equation is provided, we can find the slope of the line through

The slope and y-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, we will put the equation in this form to obtain the slope

7x = -4y + 6

4y = -7x + 6

Divide through by 4

(4y/4) = (-7x/4) + (6/4)

y = (-7/4) x + 1.5

Comaparing this with y = mx + b

m = Slope = (-7/4)

Back to the slope of the line we need

m₁m₂ = -1

m₁ = (-7/4)

(-7/4) × m₂ = -1

(-7m₂/4) = -1

Cross multiply

m₂ = (4/7)

So, recall,

y - y₁ = m (x - x₁)

m = slope = (4/7)

Point = (x₁, y₁) = (3, 6)

x₁ = 3

y₁ = 6

y - y₁ = m (x - x₁)

y - 6 = (4/7) (x - 3)

Multiply through by 7

7y - 42 = 4 (x - 3)

7y - 42 = 4x - 12

7y = 4x - 12 + 42

7y = 4x + 30

Hope this Helps!!!

User Dhskjlkakdh
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