yes, but why? of course i drew a diagram and i have the answer, but i have to know why otherwise i won't learn anything. is mr.fantastic a real person or some program? sorry i'm new...
yes, but why? of course i drew a diagram and i have the answer, but i have to know why otherwise i won't learn anything. is mr.fantastic a real person or some program? sorry i'm new...
The distance of $\displaystyle (a, b)$ from the y-axis is $\displaystyle a$ (since $\displaystyle a > 0$. Why?). The distance of $\displaystyle (a, b)$ from $\displaystyle (4, 0)$ is given by the usual distance formula.