Which of the following is an equation of line l in the xy plane above?
Correct answer: C. x+y=-4
- A. x-y=-4
- B. x-y=4
- C. x+y=-4
- D. x+y=4
Explanation
The equation x+y=-4 is correct because it matches the required slope and y-intercept of line l. Rearranging the equation yields y=-x-4, indicating a slope of -1 and a y-intercept of -4. The other options represent lines with incorrect slopes or y-intercepts, making them unsuitable for describing line l in the figure.
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