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galina1969 [7]
3 years ago
5

I have an ordered pair which is (5,-4) and the y-intercept which is -2 how do i find the slope

Mathematics
1 answer:
MArishka [77]3 years ago
8 0

Remark

So far what you know is that

y = mx - 2

Now all you need do is use the point to solve for m

y = - 4

x = 5                           Substitute

- 4 = m(5) - 2              Add 2 to both sides

-4 + 2 = 5m - 2 + 2

- 2 = 5m                      Divide both sides by 5

-2 / 5 = 5/5 m

- 0.4 = m

Answer: y = - 0.4x - 2 or

Answer: y = - (2/5)x - 2

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The measure of angles are 137.5 degrees and 42.5 degrees

Solution:

Given that two angles are supplementary

Let "a" be the one of supplementary angle

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Given that measure of one angle is 10 degree more than three times the other

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a = 10 + 3b ---- eqn 1

We know that,

Two Angles are Supplementary when they add up to 180 degrees.

a + b = 180 ---- eqn 2

<em><u>Let us solve eqn 1 and eqn 2 to find values of "a" and "b"</u></em>

Substitute eqn 1 in eqn 2

10 + 3b + b = 180

10 + 4b = 180

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From eqn 1,

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a = 10 + 127.5 = 137.5

<h3>a = 137.5</h3>

Thus the measure of angles are 137.5 degrees and 42.5 degrees

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