Question

escreva cinco pares ordenados que sejam soluções de cada umas das esquações:
a)x+y=8
b)x+2y=20
c)x-y=5
d)x/2+y=4
e)5x+y=20
f)x+y/3=1
g)2x+2y=10
h)y=x/5

Answer 1

A-) (2,6), (5,3), (7,1), (0,8), (3,5)
b-) (10,5), (18,1), (20,0), (14,3),(-20,20)
c-) (5,0), (7,2), (8,3), (9,4), (12,7)
d-) (2,3), (4,2), (6,1), (0,4), (10,-1)
e-) (2,10), (1,15), (3,5),(0,20),(6,-10)
f-) (0,3), (-1,6), (-4,15), (-3, 12), (-2,9)
g-) (0,5), (1, 4), (4,1),(6, -1), (7, -2)
h-)
x
y = -----
5
===============
5y = x
x = 5y
(5,1), (10,2), (15,3), (20,4), (25, 5)