SOLUTION: Complete the ordered pairs so that each is a solution for the equation 2x + y = 10. (5,__?__), (__?__, 10), (__?__, –2), (7, __?__)

Algebra ->  Graphs -> SOLUTION: Complete the ordered pairs so that each is a solution for the equation 2x + y = 10. (5,__?__), (__?__, 10), (__?__, –2), (7, __?__)       Log On


   

Question 515537: Complete the ordered pairs so that each is a solution for the equation 2x + y = 10.
(5,__?__), (__?__, 10), (__?__, –2), (7, __?__)

Answer by MathLover1(20850) About Me  (Show Source):
You can put this solution on YOUR website!
for the equation 2x+%2B+y+=+10

(5,__?__), ......here is x=5..plug it in 2x+%2B+y+=+10 and solve for y
2%2A5+%2B+y+=+10
10+%2B+y+=+10
+y+=+10-10
y+=+0
so, you have (5,0),

(__?__, 10), ......here is y=10..plug it in 2x+%2B+y+=+10 and solve for x
2x+%2B+10+=+10
2x+=+10-10
+2x+=+0
x+=+0
so, you have (0,10),

(__?__, –2),......here is y=-2..plug it in 2x+%2B+y+=+10 and solve for x
2x+-2+=+10
2x+=+10%2B2
+2x+=+12
x+=+6
so, you have (6,-2),


(7, __?__) ......here is x=7..plug it in 2x+%2B+y+=+10 and solve for y
2%2A7+%2B+y+=+10
14%2B+y+=+10
+y+=+10-14
y+=+-4
so, you have (7,-4)