Question

Find the coordinates of the points where the graph of the equation $3x+4y=21$ intersect $x-$axis and $y-$axis.

Answer 1

Given Equation

$3x+4y=21⟹\frac{x}{7}+\frac{y}{\left(21/4\right)}=1$

Hence $x$ intercepts at $7$ units and $y$ intercepts at $\frac{21}{4}$ units.

So, $x$ intersects at $(7,0)$ and $y$ intersects at $(0,\frac{21}{4})$.