Answer:
4x^2+12xy+9y^2
Step-by-step explanation:
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(4, -6), (-10, -6), (-3, 1), (-3, -13)
If we add/subtract t to/from any x/y coordinate, we will form a line segment with length 7. Hence, (4, -6), (-10, -6), (-3, 1), (-3, -13).
slope=(9-10)/(5-2)=-1/3