`ax + by + cgt 0` is the region which contains `(0, 0)` if and only if__________

ax + by+c gt 0 is the region which contains (0, 0) if and only if ______.

The solution set of ax + by + c lt 0 " if " c lt 0 is the _____ (region that contains (0,0)/region that does not contains (0,0))

The area of the region for which 0 >0 is

the area of region for which 0 0 is

Equation ax^(2) + bx + c = 0 represents a quadratic equation if and only if ………..

The equations ax+by+c=0 and dx+ey+f=0 represent the same straight line if and only if

The equations ax+by+c=0 and dx+ey+f=0 represent the same straight line if and only if

For a gt b gt c gt 0 , if the distance between (1,1) and the point of intersection of the line ax+by-c=0 and bx+ay+c=0 is less than 2sqrt2 then, (A) a+b-cgt0 (B) a-b+clt0 (C) a-b+cgt0 (D) a+b-clt0

The equations ax+by+c=0 and dx+ey+f=0 represent the same st. line if and only if :