Answer:
(10/3, 2/3)
Step-by-step explanation:
You may find it easier to write these two equations x+y=4 2x-y=6 in a column:
x+y=4 
2x-y=6
Adding these together will eliminate y:
3x = 10.  Then x = 10/3.
Substituting 10/3 for x in the first equation results in:
10/3 + y = 4
Clear fractions by multiplying all three terms by 3:
10 + 3y = 12
Then 3y = 2, and y = 2/3.
The solution is (10/3, 2/3)
 
        
             
        
        
        
Answer:
489
Step-by-step explanation:
 
        
             
        
        
        
In form ax + b = c: 2x - 8.4 = 5
Solution to equation: x = 6.7
Step-by-step explanation:
4x - 8.4 = 2x + 5
2x - 8.4 = 5
2x = 13.4
x = 6.7
 
        
             
        
        
        
Answer:
a) (x, y) = (1, 7)
Step-by-step explanation:
Let be the following system of inequalties:


We can find the right option by evaluating each option in the system of inequalities:
a) (x, y) = (1, 7) 


Then,
 (TRUE)
 (TRUE)
 (FALSE)
 (FALSE)
(1, 7) is not a solution of the system of inequalities.
b) (x, y) = (1, -7)


Then,
 (TRUE)
 (TRUE)
 (TRUE)
 (TRUE)
(1, -7) is a solution of the system of inequalities.
c) (x, y) = (1, -5)


Then,
 (TRUE)
 (TRUE)
 (TRUE)
 (TRUE)
(1, -5) is a solution of the system of inequalities.
d) (x, y) = (-1, 6)


Then,
 (TRUE)
 (TRUE)
 (TRUE)
 (TRUE)
(-1, 6) is a solution of the system of inequalties. 
Therefore, we conclude that correct answer is A.
 
        
             
        
        
        
Answer: y = 5/8x + 0.5
Step-by-step explanation:
5/8 is the slope if you could 5 up and 8 to the side
slope form is y=mx+b
y = 5/8x + 0.5
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