When a line is translated (shifted) in the coordinate plane, its slope remains unchanged. The translation affects the position of the line but not its steepness or direction.
In this case, the original line is given by the equation \( y = 7x - 3 \). The slope of this line is 7. After translating the line 5 units to the left and 2 units up, the slope will still be 7.
Therefore, the correct statement is: The slope of the translated line remains 7.