Solving Systems of Linear Equations: Linear Combinations — Unit test Answers
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At what value of x do the graphs of the equations below intersect?2x − y = 65x + 10y = −10
A
Option
B
−2C
2D
Option
22
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Which values of m and b will create a system of equations with no solution? Select two options.y = mx + b y = –2x +
A
m = –3 and b =
B
m = –2 and b =
C
m = 2 and b =
D
m = and b =E
m = -2 and b =23
Which statement is true about the equations –3x + 4y = 12 and x – y = 1?
A
The system of the equations has exactly one solution at (–8, 3).B
The system of the equations has exactly one solution at (–4, 3).C
The system of the equations has no solution; the two lines are parallel.D
The system of the equations has an infinite number of solutions represented by either equation.24
The system of equations below has no solution.
A
Four-thirds x = 42
B
Option
C
Fifteen-halves y = 33
D
0 = 0
25
Karina uses the system of equations below to compare the monthly utility costs in July and December for electricity, x, and natural gas, y. 750x + 17y = 141.61300x + 30y = 75.90
A
The cost of natural gas is $0.17 per unit.B
The cost of natural gas is $0.20 per unit.C
The cost of natural gas is $0.72 per unit.D
The cost of natural gas is $0.83 per unit.Did you find these answers helpful?
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