Solving Systems of Linear Equations: Linear Combinations

Question 1

Which constants can be multiplied by the equations so one variable will be eliminated when the systems are added together?5x + 13y = 23212x + 7y = 218The first equation can be multiplied by –13 and the second equation by 7 to eliminate y. The first equation can be multiplied by 7 and the second equation by 13 to eliminate y. The first equation can be multiplied by –12 and the second equation by 5 to eliminate x.The first equation can be multiplied by 5 and the second equation by 12 to eliminate

Revolt · Accepted Answer

The first equation can be multiplied by –12 and the second equation by 5 to eliminate x.

Question 2

([___] , [___] )

Revolt · Accepted Answer

74056; 74057; 3

Question 3

The variable x represents the[___] .

Revolt · Accepted Answer

cost per pound of meat; The variable x represents the .: cost per pound of meat; The variable y represents the .: cost per pound of cheese; The deli charges $ .: 4.50 for a pound of meat

Question 4

The equation that represents the total number of members is[___] .

Revolt · Accepted Answer

x+ y = 55; The equation that represents the total number of members is .: x+ y = 55; The equation that represents the total number of seniors is .: (1/3)x + (1/5)y = 13; The diving club has more members than the swim club.: 25

Question 5

Dawn has $[___] in account 1 and $[___] in account 2.

Revolt · Accepted Answer

1,670; Dawn has $ in account 1 and $ in account 2.: 1,670; Dawn has $ in account 1 and $ in account 2.: 1,570

Solving Systems of Linear Equations: Linear Combinations Answers

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