It took 8 weeks because follow 15 to the dot then go down and you see the answer
One factor of f(x) = 5x³ + 5x² - 170x + 280 is (x + 7). What are all the roots of the function? Use The Remainder <span>Theorem
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Solution:</span>
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The </span>
all roots of the function ⇒⇒⇒ -7 , 2 and 4</span><span>
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See the attached figure for the detailed solution.</span>
Simple,
using

find your slope...

thus, 10=m (slope)
Now, using y=mx+b to find your equation, plug in what you know...
Use any of the 2 coordinates.. (1,5)
5= 10(1)+b
5=10+b
-10 -10
-5=b
Thus, the equation to your line is...
y=10x-5.