Question

These lines are perpendicular. Is this statement true or false?

y =-2/5x + 4

y =5/2x − 3

Answer 1

if I said it's true, do you trust me? is there any way to test?

Answer 2

sure and idk

Answer 3

I told you before, if 2 lines perpendicular, then the slope is backward
let say m1 is the slope of line 1
m2 is the slope of line 2
then m2= -1/m1

Answer 4

now, check, m1 = -2/5
m2 = -1/m1 = \(\dfrac{-1}{-2/5} = \dfrac{5}{2}\)
so that, they are?

Answer 5

srry i told you im an idiot and whats that mean

Answer 6

That's clear as you know your own name.
\(m_2 =\dfrac{-1}{m_1}\) so, just plug those m's in \(\dfrac{5}{2}= \dfrac{-1}{-2/5}\)
and it works

Answer 7

k