To obtain the graph of \( g(x) = 7x - 8 \) from the graph of \( f(x) = 7x \), we need to identify the transformation needed.
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Understanding the functions:
- \( f(x) = 7x \) is a linear function that passes through the origin (0,0).
- \( g(x) = 7x - 8 \) is also a linear function, but it has been shifted vertically.
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Finding the translation:
- The expression \( -8 \) in \( g(x) \) indicates that we need to shift the graph of \( f(x) \) downward by 8 units.
Therefore, the translation needed to obtain the graph of \( g(x) = 7x - 8 \) from the graph of \( f(x) = 7x \) is:
Shift 8 units down.