What is the constant of proportionality? Help plz

Matt and brian were solving a system of equations. they both noticed that the two lines had the same slope. brian said that because each line in the system had the same slope, the two lines had to be parallel, which meant the solution to the system was "no solution" matt disagreed, and said they should also look at the y-intercepts before determining how many solutions there were. who is correct?

Definition: es. this is a disadvantage or weak point that makes someone or something less effective.

Find the value of x. give reasons to justify your solutions! l, m ∈ kn