What is the standard form equation of a linrle whose line has a y intercept of 5.5 and an x intercept of -10?

y = 0.55x + 5.5

Step-by-step explanation:

Start with y = mx + b.  We already know that b = 5.5, so now we have:

y = mx + 5.5.  Next, subst. -10 for x and 0 for y, obtaining 0 = m(-10) + 5.5.  Then 10 m = 5.5, and m = 5.5/10, or 0.55.  

Thus, the equation is y = 0.55x + 5.5.

you didn't post any answer choices, so its not 100% clear what your teacher is looking for

however, log(15/7) is equivalent to log(15) - log(7)

i'm using the rule log(x/y) = log(x) - log(y)

step-by-step explanation:

points a and b are equidistant from the desired line, so the line you find by using them will go through point r.

using points other than a and b will give the desired line only if they are equidistant from r. if they are randomly located, the perpendicular line you create will not necessarily go through point r, hence will not be a solution to the problem.