Solve by the substitution method 9x+6y=0, -9x+y=63

(- 6, 9 )

Step-by-step explanation:

Given the 2 equations

9x + 6y = 0 → (1)

- 9x + y = 63 → (2)

To solve by substitution

Rearrange (2) expressing y in terms of x by adding 9x to both sides

y = 9x + 63 → (3)

Substitute y = 9x + 63 into (1)

9x + 6(9x + 63) = 0 ← distribute and simplify left side

9x + 54x + 378 = 0

63x + 378 = 0 ( subtract 378 from both sides )

63x = - 378 ( divide both sides by 63 )

x = - 6

Substitute x = - 6 into (3) for corresponding value of y

y = 9(- 6) + 63 = - 54 + 63 = 9

Solution is (- 6, 9 )

1)is not similar since corresponding sides are not in the same ratio

2)are similar since corresponding sides are in the same ratio and corresponding angles are equal

hope it will

#faazmessi

answer:

your answer is: c. 196 7/8 in^3.