Answer:
[tex]y=-30x+0[/tex]
Step-by-step explanation:
we know that
A relationship between two variables, x, and y, represent a proportional variation if it can be expressed in the form [tex]k=\frac{y}{x}[/tex] or [tex]y=kx[/tex]
In a proportional relationship the constant of proportionality k is equal to the slope m of the line and the line passes through the origin
In this problem the linear equation represent a proportional relationship, because pass through the origin (0,0).
Find the value of the constant of proportionality k
For x=1, y=-30
substitute
[tex]k=\frac{-30}{1}=-30[/tex]
so
the linear equation is
[tex]y=-30x[/tex]
therefore
[tex]y=-30x+0[/tex]
