Find the number of point of intersection of two straight lines.

Check whether the given lines are parallel or perpendicular.

$\frac{x}{3}+\frac{y}{4}+\frac{1}{7}=0$ and $\frac{2x}{3}+\frac{y}{2}+\frac{1}{10}=0$

Check whether the given lines are parallel or perpendicular

$5x+23y+14=0$ and $23x-5y+9=0$.