solve simultaneous equation using graphical method
3x+4y+5=0
y=x+4
Answers
EXPLANATION.
Simultaneous equation using graphically method.
⇒ 3x + 4y + 5 = 0. - - - - - (1).
⇒ y = x + 4. - - - - - (2).
As we know that,
From equation (1), we get.
⇒ 3x + 4y + 5 = 0. - - - - - (1).
Put the value of x = 0 in the equation, we get.
⇒ 3(0) + 4y + 5 = 0.
⇒ 4y + 5 = 0.
⇒ 4y = - 5.
⇒ y = - 5/4.
y = - 1.25.
Their Co-ordinates = (0,-1.25).
Put the value of y = 0 in the equation, we get.
⇒ 3x + 4(0) + 5 = 0.
⇒ 3x + 5 = 0.
⇒ 3x = - 5.
⇒ x = - 5/3.
⇒ x = - 1.66.
Their Co-ordinates = (-1.66,0).
From equation, (2), we get.
⇒ y + x + 4. - - - - - (2).
Put the value of x = 0 in the equation, we get.
⇒ y = (0) + 4.
⇒ y = 4.
Their Co-ordinates = (0,4).
Put the value of y = 0 in the equation, we get.
⇒ (0) = x + 4.
⇒ x + 4 = 0.
⇒ x = - 4.
Their Co-ordinates = (-4,0).
Both curves intersects at a point = (-3,1).
Answer:
nice answer
hope it helps