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Gnom [1K]
2 years ago
10

Line p is represented by the equation 2x-y=-5. If line r passes through the point (6,4) and is perpendicular to line p, what is

the equation of line r?
Mathematics
1 answer:
AleksAgata [21]2 years ago
5 0

Answer:

y = -\frac{1}{2}x + 7

Step-by-step explanation:

Given

2x - y = 5

Point = (6,4)

Required

Determine the equation of perpendicular line, r

First we need to determine the slope of the given equation

2x - y = 5

Make y the subject:

y = 2x - 5

The general form of an equation is:

y = mx + b

Where:

m = slope

By comparison;

m = 2

Since both lines are perpendicular:

We have:

m_1 = -1/m to calculate the slope of the perpendicular line

m_1 = -\frac{1}{2}

Equation of the line can be solved using:

y - y_1 = m(x - x_1)

Where

(x_1,y_1) = (6,4)

m = m_1 = -\frac{1}{2}

So: the equation becomes

y - 4 = -\frac{1}{2}(x - 6)

y - 4 = -\frac{1}{2}x + 3

Solve for y

y = -\frac{1}{2}x + 3 + 4

y = -\frac{1}{2}x + 7

Hence:

The required equation is

y = -\frac{1}{2}x + 7

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