OpenStax, Intermediate Algebra 2e §3.5 Relations and Functions · Exercise 21 · Algebra · Graphs

Relations and Functions · Exercise 21

Determine whether each equation is a function.

ⓐ $2 x + y = - 3$
ⓑ $y = x^{2}$
ⓒ $x + y^{2} = - 5$

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OpenStax, Intermediate Algebra 2e · §3.5 Relations and Functions · Exercise 21

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