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$x = 4 - 5{y^2} - 9{z^2}$ Show Solution
This is an elliptic paraboloid that is centered on the $$x$$-axis. Because the $$y$$ and $$z$$ terms are negative we know that it will open in the negative $$x$$ direction. The “4” tells us that the surface will start at $$x = 4$$. We can also say that because the coefficients of the $$y$$ and $$z$$ terms are different the cross sections of the surface will be ellipses.