Solve each system by substitution. Show your work.
1 answer:
1) y = -3x - 1
Y= 3x - 7
- 3x -1= 3x -7
Like terms
-3x -3x = -7 + 4
A negative and a negative is a positive
-3x + - 3x = -6x because a positive and a negative is a negative
-7 + 1 = - 6
Hence
- 6 x = -6
Divide both sides by -6
Which gives u
X = 1
Now substitute x = 1 into one of the original equations
Y = 3x - 7
Y = 3*1 - 7
Y = 3 - 7
Look at the bigger number sign
Therefore
Y = - 4
So when x = 1, y = -4
It’s really the same for the rest of the questions to be honest
Y= 3x - 7
- 3x -1= 3x -7
Like terms
-3x -3x = -7 + 4
A negative and a negative is a positive
-3x + - 3x = -6x because a positive and a negative is a negative
-7 + 1 = - 6
Hence
- 6 x = -6
Divide both sides by -6
Which gives u
X = 1
Now substitute x = 1 into one of the original equations
Y = 3x - 7
Y = 3*1 - 7
Y = 3 - 7
Look at the bigger number sign
Therefore
Y = - 4
So when x = 1, y = -4
It’s really the same for the rest of the questions to be honest
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Base-ten units are used to represent numbers in blocks
<h3>How to represent the bundle of toothpicks</h3>The bundle is given as:
Bundle = 62
Rewrite as:
Bundle = 60 + 2
Express 60 as a product
Bundle = 6 * 10 + 2
See attachment for the drawing that represents the bundle
<h3>Ways to interpret the 6 in 62</h3>
The 6 in 62 can be interpreted in the following ways
- Way 1: 6 tens
- Way 2: 60
Read more about base-ten units at:
I hope this helps you
