15-20 is -5. If you put 15 on a number line and go back twenty spaces you land on -5 hope this helps.
Given:
y is directly proportional to x.
when
To find:
The equation that connects y with x.
Solution:
It is given that, y is directly proportional to x. So,
...(i)
Where, k is the constant of proportionality.
We have, when . Substituting these values in (i), we get
Divide both sides by 5.
Substituting in (i), we get
Therefore, the required equation is .
Answer:
the second one
Step-by-step explanation:
You need to distribute the 4 to both the n and the positive 5 so you’re answer would be 4n + 20.