I think the answer will be A
The answer is B) 6xy and -16xy
Answer:

Step-by-step explanation:
∠ABD is the sum of the angles ∠ABC and ∠CBD. In other words:

Substitute in known values:

And subtract. Hence:

In conclusion, ∠ABC measures 34°.
Answer:
Y=3x+14
Step-by-step explanation:
For perpendicular lines they have gradients which are recipricol to one another and -ve
E.g 1/3 gradient of perpendicular line is-3
Gradient of the perpendicular line is 3
Y-2/x--4=3
Y-2=3(x+4)
Y-2=3x+12
Y=3x+12+2
Y=3x+14