Can someone help me with this?

The coordinates of vortex a’ are (8,4) (-4,2) (4,-,4) the coordinates of vortex b’ are (6,6)(12,-,12)(12,12) the coordinates of vortex c’ are(-2,,12)(4,12)(12,-4)

The slope of the line whose equation is 2x - 1 = 0 is

Classify the triangle by its sides a(3,-3), b(1,4), c(-1,-1)