what relationship between t and k would make the lines with cartesian equation `3x-ky+7=0` and` tx+2y-3=0 `perpendicular?  

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You need to use the slope intercept form of equations, hence you need to isolate y to the left side in both equations such that:

`-ky = -3x - 7 =gt y = (3/k)x + 7/k`

`2y = -tx + 3 =gt...

(The entire section contains 103 words.)

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