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3 years ago

1.

2 answers:

8 0

1. Multiply the second line by 4: 4x+4y=16. They are the same line so there are infinitely many solutions.

2. Substitute for y.
x+(2x+10)=-2
3x+10=-2
3x=-12
x=-4

Plug x in
-4+y=-2
y=2

Final answer: (-4,2)

3. The answer is the first one because the solution is always where two lines intersect. The crossing of the x axis, y axis, and origin are irrelevant.

4. 2x+4=3x+1. This is because both equations define the value of y and therefore must be equivalent.

5. Infinitely many solutions. If you multiply the second equation by -3, you can tell it's coinciding or the same line.

yuradex [85]3 years ago

4 0

Answer:

no solution

Step-by-step explanation:What is the solution to the system of equations?

5x – 4y = 6

–5x + 4y = –10

(4, 4)

(–2, –5)

infinitely many solutions

no solution

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3 years ago

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7 added to the square of a number is equal to 7 times the number, minus 5

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