Answer:
2. This is only true when x=-3.
3. This is only true when x=3.
4. This is only true when x=12.
5. This has no solution.
6. This has an infinite number of solutions.
Answer
Slope: 3/2
y-intercept: -1
equation: y=3/2x-1
Step-by-step explanation:
Slope = rise/run
y- intercept is where the line intercepts the y axis
Answer:
= 
Step-by-step explanation:
Differentiate xy using the product rule, then
Given
x - y = xy
1 -
= x.
+ y. 1 = x
+ y ( subtract 1 from both sides )
-
= x
+ y - 1 ( subtract x
from both sides )
-
- x
= y - 1 ( multiply through by - 1 )
+ x
= 1 - y
(1 + x) = 1 - y ← divide both sides by (1 + x)
= 
Multiply the original amount by .79 and this will give you the amount with a 21% discount.
You can start by converting from degrees to radians and using the relation

Or just set up the proportion equation,