SOLUTION: Please help, I am so lost on these 2 problems, I ask earlier and was ask to finish, but I don't know how. Thanking you in advance Betty 1. Determine if (5/6, -2) is a solution t

Algebra ->  Linear-equations -> SOLUTION: Please help, I am so lost on these 2 problems, I ask earlier and was ask to finish, but I don't know how. Thanking you in advance Betty 1. Determine if (5/6, -2) is a solution t      Log On


   



Question 1000327: Please help, I am so lost on these 2 problems, I ask earlier and was ask to finish, but I don't know how. Thanking you in advance Betty
1. Determine if (5/6, -2) is a solution to -6x-7y=9

2.Given the linear equation y = -2/3x +1. Find the y - coordinates of the points (-6, ), (-3, ) and (3, )

Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
1. Determine if (5/6, -2) is a solution to -6x-7y=9
-------------------------------------------------------


-6x-7y=9 Start with the given equation.


-6%285%2F6%29-7%28-2%29=9 Replace x with 5/6. Replace y with -2


-5%2B14=9 Multiply


9=9 Add. This equation is true


The last equation is true, so -6x-7y=9 is true when (x,y) = (5/6, -2)


Therefore, (5/6, -2) is a solution to -6x-7y=9


============================================================================================================================


2.Given the linear equation y = -2/3x +1. Find the y - coordinates of the points (-6, ), (-3, ) and (3, )
-------------------------------------------------------


Plug in x = -6


y+=+%28-2%2F3%29x+%2B+1 Start with the given equation


y+=+%28-2%2F3%29%28-6%29+%2B+1 Replace every x with -6


y+=+4+%2B+1 Multiply


y+=+5 Add


-------------------


Plug in x = -3


y+=+%28-2%2F3%29x+%2B+1 Start with the given equation


y+=+%28-2%2F3%29%28-3%29+%2B+1 Replace every x with -3


y+=+2+%2B+1 Multiply


y+=+3 Add


-------------------


Plug in x = 3


y+=+%28-2%2F3%29x+%2B+1 Start with the given equation


y+=+%28-2%2F3%29%283%29+%2B+1 Replace every x with 3


y+=+-2+%2B+1 Multiply


y+=+-1 Add


-------------------


So the ordered pairs are (-6,5), (-3,3), and (3,-1)