Yes.
y=x+2if y=66=x+26-2=x4=xso x=4
no
Y=X^2 is a function for it forms a parabola on a graph.
(x + y)2 = x2 + 2xy + y2 So x2 + y2 = (x + y)2 - 2xy = a2 - 2b Then (x2 + y2)2 = x4 + 2x2y2 + y4 So x4 + y4 = (x2 + y2)2 - 2x2y2 = (a2 - 2b)2 - 2b2 = a4 - 4a2b + 4b2 - 2b2 = a4 - 4a2b + 2b2
Yes, it is.
If the question is, Is y = x4 an exponential function ? then the answer is no.An exponential function is one where the variable appears as an exponent.So, y = 4x is an exponential function.
y=x+2if y=66=x+26-2=x4=xso x=4
determine whether each relation is a function y equals -8
y = x This is a line and a function. Function values are y values.
(x2 + y2)(x + y)(x - y) = x4 - y4.
no
Y=X^2 is a function for it forms a parabola on a graph.
y - |x| is an expression, not a function.
If you plug in y for the x function, and it equals the answer you got, it is right.
(x + y)2 = x2 + 2xy + y2 So x2 + y2 = (x + y)2 - 2xy = a2 - 2b Then (x2 + y2)2 = x4 + 2x2y2 + y4 So x4 + y4 = (x2 + y2)2 - 2x2y2 = (a2 - 2b)2 - 2b2 = a4 - 4a2b + 4b2 - 2b2 = a4 - 4a2b + 2b2
Yes, it is.
Yes.