In which quadrant does a point lie if its $x$-coordinate is negative and the $y$-coordinate is positive?

$A$ point lies on the $x$-axis at a distance of $7$ units from the $y$-axis. What are its coordinates? What will be the coordinates if it lies on the $y$-axis at a distance of $-7$ units from the $x$-axis?

In which quadrant or on which axis does each of the following points lie?
$A(15, -10), B(-10, -20), C(25, 0), D(-15, 25), E(-5, 0), F(0, -15), G(25, 5), H(0, 15)$
Verify your answer by plotting the points in the Cartesian plane. Use the scale $1 \, cm = 5 \, \text{units}$ on both axes.

Point $(2.8, 4.9)$ lies in the $\ldots \ldots$ quadrant.

State whether the following statement is true or false:
Coordinate axes intersect at $(0,0)$.

If $a=5$ and $b=7$,then the point $(a-b, b-a)$ lies in the $\ldots \ldots \ldots$ quadrant.