Answer:
6
Step-by-step explanation:
Since they have the same x - value, just find the distance between the y - values.
6
We know that angle2+angle3+90=180 (since we see the right angle in the corner and all internal angles add up to 180) so
angle3=40
subsitute
angle2+40+90=180
angle2+130=180
subtract 130
angle2=50
answer is 50 degrees
Y/x=k
when y=9, then x= -3
9/-3=-3
⇒ k= -3