0000:00:00:00:00Start2Number 2ExplanationIf the quadratic equation ax2+bx+c=0ax^2 + bx + c = 0ax2+bx+c=0 has no real roots, then the graph of the function y=ax2+bx+cy = ax^2 + bx + cy=ax2+bx+c is tangent to the line y=−xy = -xy=−x when....b<−12b < -\frac{1}{2}b<−21−12<b<0-\frac{1}{2} < b < 0−21<b<0b>−12b > -\frac{1}{2}b>−210<b<120 < b < \frac{1}{2}0<b<21b>0b > 0b>0
2Number 2ExplanationIf the quadratic equation ax2+bx+c=0ax^2 + bx + c = 0ax2+bx+c=0 has no real roots, then the graph of the function y=ax2+bx+cy = ax^2 + bx + cy=ax2+bx+c is tangent to the line y=−xy = -xy=−x when....b<−12b < -\frac{1}{2}b<−21−12<b<0-\frac{1}{2} < b < 0−21<b<0b>−12b > -\frac{1}{2}b>−210<b<120 < b < \frac{1}{2}0<b<21b>0b > 0b>0
