Answer:
m=7
Step-by-step explanation:
15-8=7
therefore m=7
The answer is -a + b = 0
If she wants to solve <span>a system of linear equations by elimination and if one equation is unknown, one of the solutions in the unknown equation must be negative:
Known equation: a + b = 4
Unknown equation: -a + b = ?
We know that a = 2 and be = 2, thus:
</span>Unknown equation: -2 + 2 = 0
The general form of the equation is -a + b = 0
Let's check it out:
Known equation: a + b = 4
Unknown equation: -a + b = 0
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Add them up: 2b = 4
b = 4/2 = 2
a + b = 4
a = 4 - b
a = 4 - 2
a = 2
So, the second equation is correct.
We are given the endpoints. We are also given the endpoints after the transformation. For the first item, a simple distance formula verification would reveal that the distance between AB and A'B' is not equal. So, a dilation must have been done. Next, AB and A'B' are not parallel which means that a translation transformation must have been done.
After a dilation of 4/5 with A as the center, A' is still (0,0) and B' is (6 - 24/5, 8 - 32/5).