Question: Please assist answering these two question with CLEAR working 1. Find the equation of the line tangent to the curve defined by x = tz,

Please assist answering these two question with CLEAR working

1. Find the equation of the line tangent to the curve defined by x = tz, y = t - 4t at the point (4,0). [worth 5 points] 2. Determine if the polar curve defined by r = tan 0 is concave up or concave down at the point corresponding to 0 = =. [worth 5 points]
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