Question

Which pair of slopes could represent perpendicular lines?
1.) 1/7, 7
2.) 1/2, 2/4
3/) -3/4, 4/3
4.) 1/3, 1/3

Answer 1

for perpendicular lines, the product of their slopes is -1
so it's option 3
-3/4*4/3=-1

Answer 2

i have an idea of what the answer is i just don't know what i should do show my work and prove it.

Answer 3

3) , perpendicular = negative reciprocals, which means theyre flipped and negative/positive in simple terms.
ex:
5/6
-6/5
they are perpendicular .

Answer 4

thanks guys! i really appreciate it!!!