Its the same solve the system using substitution write your final answer as a coordinate point

2x + 3y =0

8x + 9y = 18

Final answer as a coordinate point (x,y) = (9, -6)

Step-by-step explanation:

2x + 3y =0  (1)

8x + 9y = 18 (2)

from equation (1)

3y = -2x

y = -2/3 x

substitute for y in equation 2

8x + 9( -2/3 x) = 18

8x - 6x = 18

2x = 18

x = 18/2

x = 9

substitute for x in equation (1)

2(9) + 3y = 0

18 + 3y = 0

3y = -18

y = -18/3

y = -6

a = 3.14

b = 18

c = 18/5 or 3.6 or 3 3/5

step-by-step explanation: