Which of the following lines is perpendicular to the line y=7/8x-2? Group of answer choices

y=-8/7x+4

y=-7/8x+9

y=7/8x+1/2

y=8/7x-6

Standard form for straight line   y =  m x + b  where m is slope

m' = -m   or m * m' = -1

answer a  or y = - 8/7 + 4     satisfies this requirement

question:

could we have options?

step-by-step explanation:

1. practice, practice & more practice

2. review errors

3. master the key concepts

do not try to memorise the processes.

4. understand your doubts.

5. create a distraction free study environment

6. create a mathematical dictionary

7. apply maths to real world problems.