Mathematics for IGCSE & O level - Sketching Curves (Section 1 - No. 42)
Which of the following is a key step in sketching a graph of a function?
Finding where the graph crosses the y-axis.
Finding the y-intercept only.
Ignoring the shape of the graph.
Using only algebraic methods.
Explanation
Finding where the graph crosses the y-axis (x=0) is essential for sketching.
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