f(x) = 2x2 + 4x - 7
2x2-y2
no
'Y' is a function 'f' of 'x': Y = f(x) . 'Z' is a function 'g' of 'y': Z = g [ f(x) ] .
Y=X^2 is a function for it forms a parabola on a graph.
If 2x + 3y = 4, y= (4 - 2x)/3. In function notation, f(x) = (4 - 2x)/3.
f(x) = 2x2 + 4x - 7
2x2-y2
determine whether each relation is a function y equals -8
y = x This is a line and a function. Function values are y values.
no
First you need to solve for y. So write 4x2+y=16 so y=16-4x2 Now write f(x)=16-4x2
'Y' is a function 'f' of 'x': Y = f(x) . 'Z' is a function 'g' of 'y': Z = g [ f(x) ] .
If you plug in y for the x function, and it equals the answer you got, it is right.
y - |x| is an expression, not a function.
Y=X^2 is a function for it forms a parabola on a graph.
Yes, it is.