Answer:

Step-by-step explanation:
Recall the trigonometric identity:

We substitute;
tan A=-1/7 and tan B=3/4


This implies that,




Answer:
2
Step-by-step explanation:
Y=mx+b
m=slope=rise/run
if slope>0, then it increases
if slope<0, then decreases because it is going down
y=7-2x
y=-2x+7
-2<0
decreasing
because the y values decrease from left to right
the x values always increase if you go from left to right
B is the answer