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05.12.2020 •
Mathematics
Find the solution of the system by graphing
y=x+1
3x+3y=-9
Part B: The solution to the system, as an ordered pair,
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Ответ:
x = -2
y = -1
(-2, -1)
General Formulas and Concepts:
Pre-Algebra
Order of Operations: BPEMDASEquality PropertiesAlgebra I
Solving systems of equations using substitution/eliminationSolving systems of equations by graphingStep-by-step explanation:
Step 1: Define systems
y = x + 1
3x + 3y = -9
Step 2: Solve for x
Substitution
Substitute in y: 3x + 3(x + 1) = -9Distribute 3: 3x + 3x + 3 = -9Combine like terms: 6x + 3 = -9Isolate x term: 6x = -12Isolate x: x = -2Step 3: Solve for y
Define original equation: y = x + 1Substitute in x: y = -2 + 1Add: y = -1Step 4: Graph systems
Check the solution set.
Ответ:
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ur welcome :)