286,828 views
19 votes
19 votes
The graph of a proportional relationship contains the point (20, 4) .

What is the corresponding equation?

please hurry i need help ill give 100 points

User VizZ
by
2.3k points

1 Answer

7 votes
7 votes

Explanation:

in a proportional relationship, one variable is always a constant value times the other.

and as such, (0, 0) is always a point of that relationship too.

in general that means the equation is

y = ax

with a being the constant.

using the given point :

4 = a×20

a = 4/20 = 1/5

so, the equation is y = x/5

User Chris Thornton
by
2.6k points