I think it’s 17.4 idk but hope it’s helpful
Answer:
or 
Step-by-step explanation:
The perpendicular slope is the opposite-reciprocal of the original slope:
Perpendicular slope of -2 is 
Write the equation in point-slope form (
):

Convert to slope-intercept form if needed:


SohcahtoaMy algebra teacher got us all to remember that word because...
Soh -
Sin =
Opposite /
Hypotenus
Cah -
Cos =
Adjacent /
Hypotenus
Toa -
Tan =
Opposite /
Adjacent
Sin, Cos, and Tan are what you can use to find missing triangle sides if you know at least one other angle besides the 90 degree angle.
The answer is 10.4 because 5 is counted as higher so it's 10.4.