y = x - 1
Or an infinite number of other equations. You'll need to be more specific.
X - Y = 2 When X = 3 you have 3 - Y = 2 Moving Y to RHS: 3 = Y + 2 Moving 2 to LHS: 1 = Y
If x+y = 3 and y times x = 2 then y = 1.
the Y in the sentence X plus Y equals 5 is Y=3 or 2 if the X is 2 or 3
If [ y = x + 2 ], then x is not -1 when y = 5.If [ y = x + 2 ],then when x = -1, y = 1,and when y = 5, x = 3.
y = x + 2 y = -x + 4 x + 2 = -x + 4 2x + 2 = 4 2x = 2 x = 1 y = x + 2 y = 1 + 2 y = 3 (1, 3)
10
x = 5, y = -2
y equals 2
2x=3-y 2y=12-x y=3-2x 2(3-2x)=12-x 6-4x=12-x -3x=6 x=-2 2(-2)=3-y -4=3-y y=7 x=-2 y=7
2xy substitute 3 for y and 5 for x 2(5)(3) = 30
y/x is a constant; so first of you can solve for this constant. y/x=6/-3, or y/x=-2 y/4=-2 y=-8
If y=2 then that means x^2=9 and x= 3 or -3