Systems by Substitution Video Notes

Solve.

-7x + y = -20

-3x + y = -12

• (2, -6)
• (0, -12)
• (3, -9)
• (1, -5)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Solve.

-5x +9y = 4

-2x + y = -14

• (-3, -1)
• (0, 0)
• (10, 6)
• (5, 2)

Tags

CCSS.8.EE.C.8C

Find the answer.

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• Bert will have 1200 points after booking 15 nights.

Tags

CCSS.8.EE.C.8C