Question

Given the function m(x) = 2x – 10, find x when m(x) = -4. X = -7 x = 3 x = 2 O x- X = -18

Answer 1

Given

`m(x)=2x-10`

You have to find x for m(x)=-4

To do so you have to equal the expression to -4 and solve for x

`-4=2x-10`

Pass "-10" to the other side of the expression by performing the inverse operation to both sides of it, that is, to add 10

`\begin{gathered} -4+10=2x-10+10 \\ 6=2x \end{gathered}`

Divide both sides by 2 to determine the value of x

`\begin{gathered} (6)/(2)=(2x)/(2) \\ 3=x \end{gathered}`

So for m(x)=-4, x=3