Figure ABCD is a parallelogram. If point C lies on the line x = −1, what is the y-value of point C?coordinate plane with points A 1 comma 4, B 1 comma 2, and D negative 1 comma 2, segments AB and AD are drawn, there is also a dashed line from point D on the line x equals negative 1

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).

In the polynomial below, what number should replace the question mark to produce a difference of squares? x2 + ? x - 36

Find the distance between c and d on the number line c=3 and d=11