Answer:
[tex] - \frac{5}{2} [/tex]
Given that,
Slope of line A=2/5
We know that , slope of perpendicular line is product of slopes.
i.e. M1 • M2=-1
[tex] m1 = \frac{2}{5} \: \: [/tex]
m2=?
Now,
[tex] \frac{2}{5} \times m2 = - 1 \\ or \: m2 = - 1 \times \frac{5}{2} \\ \: m2 = - \frac{ 5}{2} [/tex]
Therefore, Slope of line B is -5/2.
Hope this helps..
Good luck on your assignment..
