Solve the logarithmic equation with Properties of Logs

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?

Ineed me i stuck and i don’t want to get it wrong

What effect would doubling all the dimensions of a triangular pyramid have on the volume of the pyramid? explain your reasoning.