Functions and Graphs

Functions and Graphs

Secondary 3
5 marks

For \(y=−2(x+1)^2+8\), state the vertex, axis of symmetry, direction of opening and \(y\)-intercept.
Sketch the graph, labelling its vertex and intercepts.[5]

Solution:

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Answer:Vertex \((−1,8)\); Axis \(x=−1\); opens down; \(y\)-intercept \((0,6)\); Roots \((−3,0),(1,0)\).

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