If TTT is a dilation by factor k=3k=3k=3 centered at (0,0)(0,0)(0,0), what is the image of the line y=2x+1y = 2x + 1y=2x+1?
y=2x+3y = 2x + 3y=2x+3
y=6x+1y = 6x + 1y=6x+1
y=2x+1y = 2x + 1y=2x+1
y=6x+3y = 6x + 3y=6x+3