The slope-intercept form:

<em>add 27x to both sides</em>
<em>divide both sides by 9</em>

(0,0.5) and (10,10)
You always start at the beginning point and the end point and what ever points hit that line, great! That is why it is best fit and not connect the dots.
Hope I helped!
We know that domain of log(x) is ∀ x>0.
=>
domain of log(7x) is also ∀ x>0, or (0,∞) in interval notation.
Walking at 3mph he wouldve walked 15 miles in 5 hours, leaving 133 miles on bike.
133/41=3.24390244hours on the bike