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Levart [38]
2 years ago
10

Identify which equation represents a line perpendicular to the given equation 2x+5y=25

Mathematics
1 answer:
Sonja [21]2 years ago
5 0

Answer:

y = 5/2x + 5

y = 5/2x - 9.5

Step-by-step explanation:

We need to solve for the y in the expresion of 2x + 5y = 25

2x + 5y = 25\\y = (25 - 2x)/5 \\y = 5 - 2/5x

now we re-arrenge the factors in the form y = ax + b

y = -2/5x + 5

we reverse "a"

y = 5/2 + a

And now, we use a point in the other formula to solve for a:

original line:

y = 5 - 2/5x

X = 0 then Y = 5

now we solve for the general equation of the perpendicular equation:

y - y_1 = m ( x - x_1)

y - 5 = 5/2 (x - 0)\\y = 5/2x + 5

If we use a different point we get a different formula:

original line:

y = 5 - 2/5x

X = 5 then Y = 3

y - 3 = \frac{5}{2}(x - 5)\\y - 3 = \frac{5}{2}x -12.5 \\y = \frac{5}{2}x - 9.5

An Image is attached to represent

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<h3 /><h3>How to find angles involving parallel lines?</h3>

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Therefore, alternate exterior angle theorem states that when two parallel lines are intersected by a transversal, then the exterior angles formed on either side of the transversal are equal.

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learn more on parallel lines here: brainly.com/question/4427808

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