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Alexxx [7]
3 years ago
5

How do you solve -2x+y=4 with (1,2)

Mathematics
1 answer:
Sholpan [36]3 years ago
4 0

Answer:

Step-by-step explanation:

-2x+y=4

-2(1)+2=4

-2+2=0, not 4.

Therefore, (1, 2) is not a solution to this equation.

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Solve: y = 2x. y = -x+3. Write the coordinates (__, __)
romanna [79]

Answer:

(1,2)

Step-by-step explanation:

y = 2x. y = -x+3

Set the two equations equal

2x = -x+3

Add x to each side

2x+x = -x+x+3

3x = 3

Divide by 3

3x/3 = 3/3

x = 1

Now find y

y =2x = 2(1) = 2

(1,2)

4 0
3 years ago
Read 2 more answers
6. What is the greatest common factor of the following expression? *<br> 15y3 – 40y
Nady [450]

Answer:

I'm not sure what 15y3 is, but I'll take a guess.

If the only numbers are 15, 3, and -40, then the greatest common factor is 1.

If the only numbers are 15 and 3, then it's three.

If the only numbers are 15 and -40, it would be 5.

5 0
2 years ago
Between which two consecutive integers<br> is 140<br> -?<br> 2
Goshia [24]

The value of the square root of 140 lies between 11 and 12. The square root of 140 is 11.83

5 0
3 years ago
The cost of 19/4 metres of wire is rs. 171/2.find the cost of 1 meter of the wire​
sveta [45]

Answer:

if 19/4 meter (assuming 4.75) of wire = rs, then (where w is a meter of wire)

4.75w = rs,

w = 4rs / 19

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Step-by-step explanation:

8 0
3 years ago
What is the slope intercept in equation form of the graph?
mamaluj [8]

Step-by-step explanation:

  • Pick two whole points on the graph
  •    Then, use this formula: Y2 - Y1

                                               X2 - X1


  •    Finally, you're given a solution (slope)

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3 years ago
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