That would be the first choice, the transitive property of congruence
How did I get it? I just know my properties of relations:
The usually definitions apply to equality; congruence is essentially the same thing.
Reflexive Property: a=a
Symmetric Property: If a=b then b=a
Transitive Property: If a=b and b=c then a=c
When a relation is reflexive, symmetric and transitive it is called an equivalence relation and it divides the elements into equivalence classes.
Distributive Property. There is no distributive property of equality or congruence. The distributive property of multiplication over addition states: a(b+c)=ab+ac.
Y = -1/3x + b
then plug it in
-4 = (-1/3 x 6) + b. (6 times -1 divided by 3)
-4 = -2 + b. (move -2 to other side)
b = -2. (now put em all together)
y = -1/3x -2
8<em> times (</em> 2<em> plus</em> 1 ) = 24
There will be seven spaces between the 1st and the 8th post.
The distance between posts is 20 meters
The distance between the 1st and the 8th post is 20×7 = 140 metres