What rational number represents a drop of 4 1/4 in?

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Find parametric equations for the line tangent to the curve of intersection of the surfaces at the given point. surfaces: xsquared2plus+2yplus+2zequals=1212 yequals=33 point: left parenthesis 1 comma 3 comma five halves right parenthesis

One line passes through (-7,-4) and (5,4) . another line passes through the point (-4,6) and (6,-9)

With both problems. a. s.a. p directions on photo ^