Answer:
represented by the graph of a straight line through the origin with a slope equal to the unit rate.
Step-by-step explanation:
For each point (x, y) on the graph, ž is equal to k, where k is the unit rate.
Answer:
Step-by-step explanation:

multiply by
on each side

add 1 on both sides 
make it equal 0

Factor

answer is 3 and -1
Answer:
130
Step-by-step explanation:
10+10+5+5=30
50+50=100
30+100=130
Answer:
d
Step-by-step explanation:
answer is d