Answer:
b
Step-by-step explanation:
Y is three times the value of x , It can be said that y is directly proportional to Y . 
Direct proportion is when an increase in the independent variable causes an increase in the dependent variable.
the equation for direct proportion is :
y = bx
y = dependent variable
b = constant
x = independent variable
 
        
             
        
        
        
Answer:
(8,5)
Step-by-step explanation:
5x-2y=30
lets substitute "8" as x and see where that takes us
5(8)-2y=30
40-2y=30
subtract 40 on both sides
-2y=-10
divide by "-2" on both sides
y=5
(8,5) is your answer
 
        
                    
             
        
        
        
Answer:
$258 <u><em>I think</em></u>
Step-by-step Explanation:
 
        
             
        
        
        
It would be: $60.00 - ($46.42+$21.05)
$60.00 - $67.47 = -$7.47
 
        
             
        
        
        
Answer:
 .
. 
Step-by-step explanation:
Two vectors  and
 and  are parallel to one another if and only if the ratio between their corresponding components are equal:
 are parallel to one another if and only if the ratio between their corresponding components are equal:
 .
.
Equivalently:
 .
.
For the two vectors in this equation to be parallel to one another:
 .
.
Solve for  :
:
 .
.
 would be the only valid value of
 would be the only valid value of  ; no other value would satisfy the
; no other value would satisfy the  equation.
 equation.