Answer:
Step-by-step explanation:
First find the slope:
Use the point-slope form of linear equation: 
(where m is the slope and (x₁, y₁) is a point on the line)
with the found slope and one of the points:
Answer:
Unclear
Step-by-step explanation:
36 is the answer. 36/4=9 81/9=9
Standard Form is ...
ax + by = c
where a ≥ 0, b > 0 (if a=0), and {a, b, c} are mutually prime integers (unless irrational numbers are involved).
You can get there from where you're starting in a couple of steps. Multiply by the least common denominator of any fractions. (Here, you multiply by 4.) Then put the variable terms on the opposite side from the constant term. Make sure the leading coefficient is positive.
... 4y -4 = x -12
... x -4y = 8 . . . . add 12-4y
Answer:
A
Step-by-step explanation:
5in=84in
scale factor is 16.8 (84/5)
(21x12)/16.8=15
(28x12)/16.8= 20
