The graph of is shifted 3 units to the left and then reflected in the x-axis. The equation of the new graph is
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Answer: Option A —
Detailed Solution
Shift 3 units left: replace by , giving .
Reflect in the x-axis: replace by , giving .
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The vertex moves from (0, 0) to (−3, 0) and the parabola now opens downward.⚠ Common trap
(B) — uses for a left shift.Quick tip
Left : ; reflect in x-axis:
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Transformation of Curves — Preparation
This question tests your understanding of Transformation of Curves, a key topic in the Quantitative Aptitude section. The detailed solution above uses a step-by-step approach to show the reasoning, and where available, a shortcut that helps you solve similar questions in under 90 seconds during the actual exam.
Transformation of curves is about how the graph of a function changes when its equation is modified. If you know the graph of y = f(x), you can sketch related graphs without plotting points. This topic covers shifts (y = f(x) + k moves the graph up, y = f(x - h) moves it right), reflections in the axes (y = -f(x) and y = f(-x)), stretches and compressions (y = af(x) and y = f(ax)), and graphs involving modulus such as y = |f(x)| and y = f(|x|). Exam questions ask you to identify the graph of a transformed function, find the new position of a point or vertex, or count the solutions of an equation using graphs. A common trap is the direction of horizontal shifts: f(x - 2) moves the graph two units to the right, not the left. Practise the transformation of curves questions below, each with a step-by-step solution.