so you first want to wright down the equation (it helps later in math) like this...
y - 4 = 0
then you want to isolate "y" so to cancel out the -4 you have to make it 0. however if you add 4 to the equation then you have to do the same on the other side of the equation such as...
y - 4 + 4 = 0 + 4
From there it is simple arithmetic...
Y = 4
and there is your answer
If: 3x+y = 4 and x+y = 0 Then: x = 2 and y = -2
x = y = 0 ?
8
y = 4
sin(pi) = 0 so 4*sin(pi) = 0 so Y = 0
x = 0 and y = 4
y2 +8y + 16 = 0 can factor to (y+4) (y+4) = 0 so y+4 = 0 so y = -4
16y-9y3 = 0 y*(16-9y2) = 0 y*(4-3y)*(4+3y) = 0 So y = 0 or (4-3y) = 0 or (4+3y) = 0 ie y = 0 or y = 4/3 or y = -4/3
First convert it to Y= y-x+4=0 y=x-4 The graph has a slope of 1 and the y-intercept is (0,-4)
Y-4 = 0 Y = 4 X = 0:::Y = 4 and on and on this is a straight horizontal line the intersects the Y axis at four.
2x-y+4=0... what are you actually trying to find?
Yes it is. The solution is: y=4 .