# Find the 15

Find the tangent line of the ellipse 9 x2 + 16 y2 = 144 that has the slope k = -1

Result

t1 = (Correct answer is: x + sqrt(19))
t2 = (Correct answer is: x-sqrt(19))

### Step-by-step explanation:

${t}_{2}=x-\sqrt{19}$

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