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What is [tex]$y - 4 = -2(x + 7)$[/tex] written in standard form?

Choose 1 answer:

A. [tex]-2x + y = -10[/tex]

B. [tex]x + 2y = -10[/tex]

C. [tex]x - 2y = -10[/tex]

D. [tex]2x + y = -10[/tex]


Sagot :

To rewrite the given equation [tex]\( y - 4 = -2(x + 7) \)[/tex] in standard form, let's follow these steps:

1. Start with the given equation:
[tex]\[ y - 4 = -2(x + 7) \][/tex]

2. Distribute the [tex]\(-2\)[/tex] on the right side of the equation:
[tex]\[ y - 4 = -2x - 14 \][/tex]

3. Add [tex]\(4\)[/tex] to both sides to isolate the [tex]\(y\)[/tex] term on the left:
[tex]\[ y - 4 + 4 = -2x - 14 + 4 \][/tex]
Simplifying this, we get:
[tex]\[ y = -2x - 10 \][/tex]

4. To convert this to standard form [tex]\(Ax + By = C\)[/tex], where [tex]\(A\)[/tex], [tex]\(B\)[/tex], and [tex]\(C\)[/tex] are integers and [tex]\(A\)[/tex] is positive, we rearrange the equation:
[tex]\[ 2x + y = -10 \][/tex]

Thus, the equation in standard form is [tex]\(2x + y = -10\)[/tex], hence the correct answer is:

4. [tex]\(2x + y = -10\)[/tex]