find the ordered pair of
a+8b=9
a+3b=-1
5 answers
(-7,2)
subtracting the two
5b=10
b =5
a=9-8b==>9-8(5)
=-31
5b=10
b =5
a=9-8b==>9-8(5)
=-31
why do i find this confusiong
a+8b=11
a+2b=-1
a+8b=11
a+2b=-1
subtract the second from the first:
(1-1)a + (8-2)b = 11-(-1)
0a+6b = 12
b=2
so, a = 11-8b = -5
or, a = -1 - 2b = -5
(1-1)a + (8-2)b = 11-(-1)
0a+6b = 12
b=2
so, a = 11-8b = -5
or, a = -1 - 2b = -5
sorry
b=2 and a=-7
b=2 and a=-7
1 answer