Exercises: Multiply Matrices by Scalars

Work through each section in order. Show your work where indicated.

Grade 9·18 problems·~25 min·Common Core Math - HS Number and Quantity·standard·hsn-vm-c-7

Work through problems with immediate feedback

Recall / Warm-Up

If $A = \begin{bmatrix} 2 & -1 \\ 0 & 4 \end{bmatrix}$ and $c = 3$ , what is the $(1,2)$ entry of $cA$ ?

$-1$

$-3$

$3$

$6$