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serious [3.7K]
2 years ago
12

Find the values of m and c if the straight line y=mx+c passes through the point (-2,5) and has a gradient of 4.

Mathematics
1 answer:
MAVERICK [17]2 years ago
6 0

(2,5) and (4,13)

y - y1 = y2 - y1

x - x1    x2 - x1

 

y - 5  = 13 - 5 = 8/2 = 4 x - 2     4 - 2

y - 5 = 4x - 8

y = 4x - 3

m = 4, c = -3

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Using the together rate, it is found that if Mrs Adams camps alone, she will use all the water in 24 hours.

<h3>What is the together rate?</h3>

The together rate is the sum of each separate rate.

In this problem, the rates are:

  • Together: 1/8.
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Hence:

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More can be learned about the together rate at brainly.com/question/25159431

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2 years ago
Find K such that the points (-2, 5), (2, 8) and (6, K) are collinear.
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Answer:

k = 11

Step-by-step explanation:

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slope of line AB = \frac{8-5}{2+2}=\frac{3}{4}

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3 years ago
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2 years ago
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Answer:

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Note that the question is asking for the order from greatest to least.  In the case of decimals, I find it easier to compare by placing them in a line going down and filling in zeros where needed to make them the same place values:  

2.256 - S

2.220 - T

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Since they all have the same first digit, I will look at the next digit following the decimal.  '7' is the greatest, then '25', then '22' then '09':

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