Question

3. XY has an equation of x = 8. What is the equation, in point-slope form, of a line that is

perpendicular to XY and passes through (6, 9)?

(i'm looking for an explanation)

Answer 1

Answer: y=9

Explanation:

Plug in (6,9) into the slope intercept form equation:

9=0(6) +b

Then get

9=b

When you make the equation you would end up with:

y=0x+9

which simplifies to y=9