Answer:
18 ft
Step-by-step explanation:
Y –<span> y</span>1<span> = m</span>(<span>x </span>–<span> x</span>1<span>)
y - -2 = 3 (x-1)
y + 2 = 3(x-1)
answer: </span>y + 2=3(x−1)

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Step 1 -

[ distributive property ]
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Answered by : ❝ AǫᴜᴀWɪᴢ ❞
18a+15
making a subject of formular
a=18-15
=3