solve 5x-4y+8=0,7x+6y-9=0 graphically
Answers
Answered by
16
x=4/5y + -8/5 , x=-6/7y + 9/7
set equal, 4/5y + -8/5 = -6/7y + 9/7
y = 101/58
enter y, (4/5)(101/58)+(-8/5)=x
-0.20689655172=x
(-6/29,-101/58)
Answered by
14
( i ) 5x - 4y + 8 = 0
▶4y = 5x + 8
▶y = 5x + 8 /4
↪ x , y
↪4 , 3
↪-4 , 3
↪-8 , 8
( ii ) 7x + 6y - 9 = 0
▶6y = 7x - 9
▶y = 7x - 9 / 6
↪ x , y
↪ 3 , -2
↪-3 , 5
↪ 9 , -9
❇ Inconsistent - A pair of linear equations which has no solution , is called inconsistent.
▶4y = 5x + 8
▶y = 5x + 8 /4
↪ x , y
↪4 , 3
↪-4 , 3
↪-8 , 8
( ii ) 7x + 6y - 9 = 0
▶6y = 7x - 9
▶y = 7x - 9 / 6
↪ x , y
↪ 3 , -2
↪-3 , 5
↪ 9 , -9
❇ Inconsistent - A pair of linear equations which has no solution , is called inconsistent.
Similar questions