Answer:
Option 1
Step-by-step explanation:
The formula of constant porpotionality is

or

where k is the constant of porpotionality.
This equation is direct variation so we will use

The equation is in the form

1.5 is in k place so the constant of porpotionality is 1.5
Answer:
b 2,3,8
Step-by-step explanation:
Y=234678
Z=278910
X=12358
234678910 n 12358
=238
-3.6
Explaination: it goes through the 6 and -3 points in the slope.
The answer is 134 degrees