The graph of is the reflection of the graph of in
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Answer: Option B β the y-axis
Detailed Solution
Each point on corresponds to on .
Changing the sign of only is a reflection in the y-axis.
β Check
For , the point (1, 2) goes to (β1, 2), its mirror image in the y-axis.β Common trap
(A) the x-axis β that reflection is .Quick tip
: y-axis; : x-axis; : origin
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Ask a doubtMore Transformation of Curves Questions
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- Q5.If the graph of is shifted by 5 units up along the y-axis and 2 units to the right along the x-axis, then the equation of the resultant graph is
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Transformation of Curves β 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.