A constant force of $\overrightarrow{F}=\langle3,7\rangle$ moves an object along a straight line from the point $(-5,-4)$ to the point $(8,9)$. Find the work done if the distances are measured in feet and the force is measured in pounds.
What I Tried
I graphed the two points and found the distance between them. (I did this by drawing a triangle from the straight line created by the points to see what the $X$ and $Y$ portions of the triangle were). But it resulted in the wrong answer.
I used the distance from the two points and multiplied them by $\langle3,7\rangle$ (the force vector). Could you please tell me where I went wrong and what steps I could take to fix this?