f(x)= mx, x<4 and x^2, x> or =4
Hello, sluggerbroth!
$\displaystyle \text{Where is the }n\,?$
$\displaystyle f(x) \:=\:\begin{Bmatrix}mx & \text{ if }x < 4 \\ x^2 & \text{ if }x \ge 4 \end{array}$
$\displaystyle \text{Find values of }m\text{ and }n\text{ so }f(x)\text{ is continuous.}$
Equate both branches of the function.
Substitute $\displaystyle x = 4.$
Solve for $\displaystyle m.$