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Solve by substitution-5x+4y=22 x - 3y = 0A) No solution. b. (6, 2) c. Infinitely many solutions. d. (-6, 2) e. (-6, -2)
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Solve by substitution-5x+4y=22 x - 3y = 0A) No solution.

b. (6, 2)
c. Infinitely many solutions.
d. (-6, 2)
e. (-6, -2)

User Cristian Greco
by
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1 Answer

5 votes
We want to use substitution to solve
-5x + 4y = 22 (1)
x - 3y = 0 (2)

From (2), obtain
x = 3y (3)
Substitute (3) into (1).
-5(3y) + 4y = 22
-15y + 4y = 22
-11y = 22
y = -2
From (3), obtain
x = 3y = 3*(-2) = -6

Answer: e. (-6, -2)
User Alexander Starbuck
by
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