Define a relation R from R to R as follows:
For all ( x , y) ∈ R × R,
.( x , y ) ∈ R means that y = x2
a. Is (2, 4) ∈ R? Is (4, 2) ∈ R? Is (–3) R 9? Is 9 R (–3)?
b. Draw the graph of R in the Cartesian plane.
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