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Naily [24]
4 years ago
7

1. (08.01 LC)

Mathematics
1 answer:
Tomtit [17]4 years ago
5 0
1. 3x+3y=9 since it is a coinciding line.It is equivalent because all the terms are multiplied by 3 from the original equation.

2. x-4=3x+4
x=3x+8
-2x=8
x=-4

y=-4-4
y=-8

The answer is C because the solution must always satisfy both equations.
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There are many ways to solve simultaneous linear equations. One of my favorite for finding integer solutions is graphing. The attached graph shows the solution to be ...

... (x, y) = (4, 7)

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You can also use Cramer's Rule, or the Vedic math variation of it, which tells you the solution to

ax+by=c\\dx+ey=f

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8 0
3 years ago
A circle is represented by the equation below:
nadya68 [22]

Answer:

The center is (9,-8) and the diameter is 8

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A circle is in the form

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The center is (9,-8) and the diameter is 8

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