Question

Write an equation that describes the function.

Answer 1

$\bf \begin{array}{ccll} x&y\\ \text{\textemdash\textemdash\textemdash}&\text{\textemdash\textemdash\textemdash}\\ 0&\stackrel{0\times 4}{0}\\\\ 1&\stackrel{1\times 4}{4}\\\\ 2&\stackrel{2\times 4}{8}\\\\ 3&\stackrel{3\times 4}{12}\\ ------&------\\ x&y=x\times 4\\ &y=4x \end{array}$