Parameterize the intersection of the surfaces z=x^2-y^2 and z=x^2+xy-1(adsbygoogle = window.adsbygoogle || []).push({});

What's getting me stuck on this problem is the xy. I set x=t

z=x^2-y^2

z=t^2-y^2

z=x^2+xy-1

t^2-y^2=t^2+ty-1

y^2=1-ty

Thats as far as of come, I'm stuck on this

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# Parameterize the intersection of the surfaces

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