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Matrices - how to find x and y when matrix (x y) is multiplied by another matrix which gives an answer?

1 Answer

Feb 26, 2018

#x=4, y=6#

Explanation:

To find #x# and #y# we need to find the dot product of the two vectors.

#((x,y))((7),(3))=((7x,7y),(3x,3y))#

#7x=28#

#x=28/7=4#

#3(4)=13#

#7y=42#

#y=42/7=6#

#3(6)=18#

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