If the points $P(a,-11), Q(5,b), R(2,15)$ and $S(1,1)$ are the vertices of a parallelogram $ABCD$, find the values of $a$ and $b$.

$qy+px+r=0$  রেখার ঢাল কোনটি?

If $A$ & $B$ are the points $(-3, 4)$ and $(2, 1)$, then the coordinates of the point $C$ on produced $AB$ such that $AC = 2BC$ are

If two opposite vertices of a square are (5, 4) and (1, -6) then the coordinates of its remaining two vertices are

A frog is presently located at the origin $(0, 0)$ in the xy-plane. It always jumps from a point with integer coordinates to a point with integer coordinates moving a distance of $5$ units in each jump. What is the minimum number of jumps required for the frog to go from $(0, 0)$ to $(0, 1)$?