Question

Find the value of k if it is known that the graph of y=kx goes through:

Answer 1

Insert the point, x=-30, y=3:
y=kx
3=k*-30
3=-30k
-1/10=k

Answer 2

add the point, x=-30, y=3:

y=kx

3=k*-30

3=-30k

-1/10=k

so the final answer:

k= -1/10