Y=-2x+5 in standard form

Find the gradient of f(x, y,z)equals=left parenthesis x squared plus y squared plus z squared right parenthesis superscript negative 1 divided by 2 baseline plus ln left parenthesis x right parenthesis x2+y2+z2−1/2+ln(xyz) at the point left parenthesis negative 2 comma 1 comma negative 2 right parenthesis(−2,1,−2).

Which statement accurately explains whether a reflection over the x-axis and a 180° rotation would map figure acb onto itself?

What term makes it inconsistent y=2x - 4