Which function represents g(x), a reflection of f(x) = 1/2 (3)^x across the y-axis?
O g(x) = 2(3)^x
O g(x) = -1/2 (3)^x
O g(x) = 1/2(3)^x
O g(x) = 2(3)^-x

With alll of except for the 2 that i did already

Determine if the equation defines y as a function of x: 2xy = 1. yes o no

For [tex]f(x) = 4x + 1[/tex] and (x) = [tex]g(x)= x^{2} -5,[/tex] find [tex](\frac{g}{f}) (x)[/tex]a. [tex]\frac{x^{2} - 5 }{4x +1 },x[/tex] ≠ [tex]-\frac{1}{4}[/tex]b. x[tex]\frac{4 x +1 }{x^{2} - 5}, x[/tex] ≠ ± [tex]\sqrt[]{5}[/tex]c. [tex]\frac{4x +1}{x^{2} -5}[/tex]d.[tex]\frac{x^{2} -5 }{4x + 1}[/tex]