For this case we have that by definition, the equation of a line of the slope-intersection form is given by:
Where:
m: It is the slope of the line
b: It is the cut point with the y axis
By definition, if two lines are perpendicular then the product of their slopes is -1.
If we have: 
Thus, the equation is of the form:
We substitute the point:
Finally, the equation is:
Answer:
Answer:
A)
- National brand cornflakes is 0.174 = .17/oz
- Store label cornflakes is 0.514 = .15/oz
B) The larger box is cheaper per ounce.
C) 2.09 – .30 = 1.79 for 12 ounces. So than $1.79/12= .15/oz.
They would both be the same so there would be no better deal.
You cant if you are trying to figure out what the factors are
C. (8,-2), (-2,5), (6,0) is a function, because all the numbers are different unlike A, B, and D those all have the same number either in there domain or range.
