Equation for the table (green line):
V = 4t
Because for each increment of 1 unit on t, we get 4 units increment on V and the line crosses by the origin (0, 0)
Equation for the original line (black line):
V = 2t + 6
Because for each increment of one unit on t, we get 2 units increment on V and the line crosses the y axis at 6
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