To analyze the equation \( 8x - 3y = 2x + 9y \), let's look at the statements provided:
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8 is the only factor of 8x.
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8 is the only factor of 8 x. (This is the same statement as the first, just with a space.)
Both of these statements are incorrect. While 8 is a factor of \( 8x \), it is not the only factor—1 is also a factor.
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There are four variables.
This statement is incorrect. The equation contains two variables: \( x \) and \( y \).
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8, −3, 2, and 9 are coefficients.
This statement is correct. In the equation, 8 is the coefficient of \( x \) in \( 8x \), -3 is the coefficient of \( y \) in \( -3y \), 2 is the coefficient of \( x \) in \( 2x \), and 9 is the coefficient of \( y \) in \( 9y \).
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8, −3, 2, and 9 are constants.
This statement is incorrect. Coefficients are not constants; they are multipliers of the variables in this context.
Thus, the correct statement is: 8, −3, 2, and 9 are coefficients.