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).

Answer 1

Slope perpendicular to undefined is a slope of 0.

So, m=0

use y=Mx+b where m=0, x and y come from the point. (6,9)

9=0(6)+b

9=b

b is the y-intercept.

plug in m=0 and b=9 to the slope intercept equation.

y=0x +9

therefore the equation of a line, perpendicular to x=8 and passing through (6,9) simplifies to y= 9.

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