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Keith_Richards [23]
3 years ago
5

Find the slope of the line 3,0 and 0,-3

Mathematics
1 answer:
liubo4ka [24]3 years ago
6 0

Answer:

1

Step-by-step explanation:

The slope of the line is 1. To find slope use the formula \frac{y_{2}-y_{1}  }{x_{2}-x_{1}  }, this calculates the change in y over the change in x. So plug in the known values \frac{0+3}{3-0}, this equals 3/3 or 1. This means every time y increases by 1, x will also increase by 1.

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8.4.9 On or off the line & Practice Problems
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Answer:

Number of quarters → 15

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Step-by-step explanation:

Let the number of dimes I have = y

And number of quarters = x

Since, I have amount in my pocket = $2

Therefore, 0.10y + 0.25x = 2

100(0.10y + 0.25x) = 100×2

25x + 10y = 200

5x + 2y = 40

2y = -5x + 40

y = -2.5x + 20 ---------(1)

Total number of coins in my pocket = 17

x + y = 17

y = -x + 17 ---------(2)  

By using a graphing calculator we can graph these two lines (As attached)

Solution of the given system of equations will be the point of intersection of these lines.

Solution → (2, 15)

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Answer:

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Step-by-step explanation:

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