Question

If the input, x, is 16, which equation would result in an output of 4?y = x²y = x + 12y = x - 20y = x - 12

Answer 1

In order to find the equation that has an output of 4 for an input of 16, let's use the value of x = 16 in each equation and calculate the value of y:

$\begin{gathered} y=x^2 \\ y=16^2=256 \\ \\ y=x+12 \\ y=16+12=28 \\ \\ y=x-20 \\ y=16-20=-4 \\ \\ y=x-12 \\ y=16-12=4 \end{gathered}$

So the correct option is the fourth one: y = x - 12