Find the 8th term of the geometric sequence 7, 28, 112, ...

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?

The diameter of a circular chip is doubled to use in a new board game. the area of the new chip will be

Reflect the point (7,0) across the y-axis