MATHEMATICS · Subjective · AP · Calculus AB · Differential Equations · Differential Equations
Problem
Consider the differential equation dxdy=x+y. A solution curve passes through (−1,0). Using only information from the slope field, determine whether this curve crosses the y-axis (at x=0) above or below the x-axis. Provide your answer (“above” or “below”) and justify briefly using the sign of the slope between x=−1 and x=0.