Answer:
9
Step-by-step explanation:
2*2=4*2=8+2=10-1=9
Answer:
false
Step-by-step explanation:
consider y = 3
its 6 for one and 3 for the other
Y-y
——-
X-x
21-9=12
5-(-1) =6
So the answer is D
By a straight line or plane that touches a curve or curved surface at a point, but if extended does not cross it at that point.