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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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Step-by-step explanation:

because 18/40 = 45%

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What is the solution to the equation 41+5 -3- 7+5?
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Please help i’m confused
Pavel [41]

Answer:

The answer is A. t = 0.4n

Step-by-step explanation:

<em>See how on the graph, when n is 2, t is around 1? We just plug in 2 into n into the equation, t=0.4n. 0.4 times 2 is 0.8, so t=0.8. 0.8 is around 1, so a is right.</em><em> </em>If we tried the same thing with one of the other choices, like B. t=2.5n, then plugging in 2 into n would give us 2 times 2.5, which is 5. 5 is nowhere around 1, making it wrong.

6 0
3 years ago
The yearly cost y for driving a certain car is $7,800 for 10,000 miles
Licemer1 [7]

Answer:

y = 0.36x + 4200.00

15100.00 miles.

Step-by-step explanation:

If the yearly cost for driving x miles is given by y dollars then the two ordered pairs to find the linear relation between x and y are (10000,7800) and (20000,11400).

So, the equation will be

\frac{y - 11400}{11400 - 7800} = \frac{x - 20000}{20000 - 10000}

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3 years ago
Integrate the following: ∫<img src="https://tex.z-dn.net/?f=5x%5E4dx" id="TexFormula1" title="5x^4dx" alt="5x^4dx" align="absmid
Fiesta28 [93]

Answer:

A. x^5+C

Step-by-step explanation:

This is a great question! The first thing we want to do here is to take the constant out of the expression, in this case 5. Doing so we would receive the following expression -

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We can then apply the power rule " \int x^adx=\frac{x^{a+1}}{a+1} ", where a = exponent ( in this case 4 ),

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From now onward just simplify the expression as one would normally, and afterward add a constant ( C ) to the solution -

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