Answer:
A. 3x+2y=-9
Step-by-step explanation:
Of course, a graphing calculator can help you choose the appropriate line. (see attached)
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Selections A and B are in standard form. When the x and y coefficients are the same, the slope of the line is negative, so of those selections, A is a good candidate. Setting x=0 can help you see the sign of the intercept. It will be negative when the constant and the y-coefficient have different signs. Hence A is an appropriate answer selection.
Selections C and D are in slope-intercept form. This form makes it easy to see that line D has negative slope, but a positive y-intercept. C has a positive slope, so it does not meet the selection criteria, either.
Thus A is the appropriate choice.
