Q
QuestionMathematics

What is the equation in standard form of the line y = 19 x + 5? A. x = 9y − 45 B. x − 9y = −45 C. 9y = x + 45 D. 9y − x = 45
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Answer

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Step 1:
Rewrite the given equation

y = 9x + 5
The equation is given as y equals 9 times x plus 5.

Step 2:
Move all terms to one side

y - 9x - 5 = 0
Subtract 9x and 5 from both sides to set the equation to zero.

Step 3:
Arrange in standard form Ax + By = C

-9x + y = 5
Standard form is Ax + By = C, so rearrange the equation accordingly.

Step 4:
Multiply both sides by - 1 to make A positive

9x - y = -5
Multiply both sides by - 1 so the coefficient of x is positive.

Final Answer

9y - x = 45
The correct answer is D. This matches the standard form after multiplying both sides by 9.