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Rudiy27
3 years ago
10

The points (-4,r) and (2,-3) lie on a line with a slope-1. Find the missing coordinator r.?

Mathematics
1 answer:
MAVERICK [17]3 years ago
7 0

Answer:

3 (-4,3)

Step-by-step explanation:

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That is, x + y = 14 ....... (1)

Also, from the question,

If you reverse and double the original number, and then add the result to the original number, the sum is 222

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Now, if this is added to the original number (10x + y), the sum is 222.

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x + y = 14 ....... (1)

12x + 21y = 222 ........ (2)

From equation (1)

x + y = 14

Then, x = 14 - y ...... (3)

Substitute the value of x in equation (3) into equation (2)

12x + 21y = 222

12(14 - y) + 21y = 222

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168 + 9y = 222

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y = 6

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x = 14 - y

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Recall that, the two digits are x and y, where x is the tens digit and y is the units (ones) digit.

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