Mathematics for IGCSE & O level - Sketching Curves (Section 5 - No. 19)
What happens to the graph of \(y = 2^x\) if the equation becomes \(y = 2^x - 4\)?
The graph shifts 4 units to the right.
The graph shifts 4 units to the left.
The graph shifts 4 units downwards.
The graph shifts 4 units upwards.
Explicació
Subtracting 4 from the function shifts the graph downwards by 4 units.