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1.3 Equivalent Linear Equations and Systems Worksheet MPM2D Jensen 1. Which two equations are equivalent?
A. 𝑦 = !!𝑥 + 3
B. 𝑦 = 𝑥 + 6 C. 2𝑦 = 𝑥 + 6
2. Which is not an equivalent linear relation?
A. 8𝑦 = 12𝑥 + 4 B. 4𝑦 = 6𝑥 + 2 C. 2𝑦 = 3𝑥 + 4 D. 𝑦 = !
!𝑥 + !
!
3. Write two equivalent equations for each; a) 𝑦 = 3𝑥 − 2 b) 3𝑥 + 6𝑦 = 12 c) 𝑦 = !
!𝑥 + 2 d) 8𝑥 + 4𝑦 = 10
4. The perimeter of the rectangle is 24. Write an equation to represent this situation. Then, write an equivalent linear equation. 5. The values of the nickels and dimes in Tina’s wallet is 70 cents. Write an equation to represent this information. Then, write an equivalent linear equation. 6. A linear system is given. 3𝑥 − 6𝑦 = 15 𝑥 + 𝑦 = 3 Explain why the following is an equivalent linear system: 𝑥 − 2𝑦 = 5 2𝑥 + 2𝑦 = 6
7. A linear system is shown on the graph: Equation 1: 𝑦 = 2𝑥 Equation 2: 𝑦 = 6− 𝑥 a) Use a graph to show that the following is an equivalent linear system: Equation 3: 2𝑦 = 𝑥 + 6 Equation 4: 0 = 3𝑥 − 6 b) How is equation #3 obtained from equations #1 and #2? c) How is equation #4 obtained from equations #1 and #2?
8. A linear system is given: Equation #1: 𝑦 = !
!𝑥 − 1
Equation #2: 𝑦 = − !
!𝑥 + 2
a) Explain why the following is an equivalent linear system: Equation #3: 3𝑦 − 2𝑥 = −3 Equation #4: 3𝑦 + 𝑥 = 6 b) Graph the four equations on the same grid to show that they are equivalent linear systems.
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