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Mekhanik [1.2K]
3 years ago
6

4y - 5x = 9 x = 4y + 11

Mathematics
1 answer:
Galina-37 [17]3 years ago
4 0

4y - 5x = 9

x = 4y + 11

We can substitute this value of x in the first equation:

4y - 5(4y+11) = 9

4y - 20y - 55 = 9

16y = -64

y = -4

x = 4y + 11

x = -16 + 11

x = -5

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sergiy2304 [10]
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The table below shows how much Joe earns, y, after working x hours.
FromTheMoon [43]

Answer: Given : Joe’s Earnings and hour worked

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Joe computes the slope between (4, 30) and (12, 90), then computes the slope between (4, 30) and (10, 75).

To Find : How do the two slopes compare?

Solution:

Hours worked     Money earned

4                          $30

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slope between (4, 30) and (12, 90),

= (90 - 30)/(12 - 4)

= 60/8

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slope between (4, 30) and (10, 75)

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The slope between (4, 30) and (12, 90) and between (4, 30) and (10, 75) is the same.

Both Slopes are same.

i hope this helped and have a nice day/night

4 0
3 years ago
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3 years ago
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ch4aika [34]

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I have a site that I use a lot that is perfect for problems like these. It's called Desmos.com. It's basically a free online graphing calculator that is super helpful for most problems relating to graphs.

3 0
3 years ago
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