What is y-2={-3}(x-7)y−2=−3(x−7)y, minus, 2, equals, minus, 3, left parenthesis, x, minus, 7, right parenthesis written 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).

Find the cosine function that is represented in the graph.

Which coefficient matrix represents a system of linear equations that has a unique solution ? options in photo*