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Tasya [4]
2 years ago
5

Waterters

Mathematics
1 answer:
Leno4ka [110]2 years ago
8 0
Wait can you rewrite this better?
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Write the equation of a line that is parallel to the line 2x - 3y = 5 and passes through the point (2, -1)
jek_recluse [69]

Answer:

The equation of the line is 2x - 3y = 7 ⇒ answer A

Step-by-step explanation:

* Lets revise the relation between the parallel lines

- If two lines are equal then their slopes are equal

- We can make an equation of a line by using its slope and

 a point on the line

- If the slope of the line is m and passing through the point (x1 , y1),

 then we can use this form [y - y1]/[x - x1] = m to find the equation

* Lets solve the problem

- The line is parallel to the line 2x - 3y = 5

∴ the slope of the line = the slope of the line 2x - 3y = 5

- Rearrange the terms of the equation to be in the form

  y = mx + c to find the slope of it

∵ 2x - 3y = 5 ⇒ subtract 2x from both sides

∴ -3y = 5 - 2x ⇒ divide two sides by -3

∴ y = 5/-3 - 2x/-3 ⇒ y = 2/3 x - 5/3

∴ The slop of the line is 2/3

∵ The line passes through point (2 , -1)

* Lets use the rule to find the equation of the line

∵ y - (-1)/x - 2 = 2/3

∴ y + 1/x - 2 = 2/3 ⇒ by using cross multiplication

∴ 3(y + 1) = 2(x - 2) ⇒ open the brackets

∴ 3y + 3 = 2x - 4 ⇒ put x an d y in one side

∴ 2x - 3y = 3 + 4

∴ 2x - 3y = 7

* The equation of the line is 2x - 3y = 7

8 0
3 years ago
A shop has 15% sale. Originally a computer cost £275. How much does the computer cost in the sale?
lutik1710 [3]
15%×£275=£41.25
£275-£41.25=£233.75
5 0
3 years ago
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goldfiish [28.3K]
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List six rational numbers between - 2and 2​
Svetlanka [38]

Answer:

0 and 1

Step-by-step explanation:

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2 years ago
A teacher gives a test with questions that fall into 3 levels of difficulty (easy, moderate, and hard).
Tpy6a [65]
When a teacher gives a test with questions that fall into 3 levels of difficulty (easy, moderate, and hard) The scoring method that would best allow her to identify the students who need help is: 
B. weight each question by its difficulty: 1 for easy, 2 for moderate, and 3 for hard.
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3 years ago
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