Question

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

Answer 1

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)