Which linear equation is modeled by the graph? A)-2x-3y=15
B)2x-3y=-15
C)2x+3y=-15
D)2x-3y=15

The answer is option A. If you observe the graph carefully...you can observe that the slope is positive and the y-intercept is -5. But it doesn't match with any in the option. That means you have to simplify every equation. For that move the X values to the right hand side then move the coefficient of y to the right hand side...that should give you the solution. This will take time and one shouldn't spend time in mcq. To save your timejust play around with signs. You can get the solution directly. we can observe that the slope is positive and if we move the positive X values then we will be getting negative slope...which ain't meeting the conditionthus we have to move the negative X to the right hand side to have positive slope...thus option a is correct.