Question

If you are finding the line perpendicular to x + 3y = 5, what is the slope of the perpendicular line?
A. -3/5
B. 1/3
C. 3
D. -3

Answer 1

x + 3y = 5
3y = 5 - x

y = 5/3 - x/3

this is the slope intercept form , where x's coefficeint is the slope

Answer 2

so -1/3 is the slope of this line

for a line perpendicular to this , the slope is -1/slope of line

Answer 3

= -1/-1/3 = 3

Answer 4

the slope of perpendicular lines are NEGATIVE RECIPROCAL

so if you have a line with slope "a" for one, the perpendicular line to that will have a slope of

RECIPROCAL of that
1/a
NEGATIVE of that

- 1/a

Answer 5

Do you understand @musa19965 ?

Answer 6

Kinda