At what point will the graphs of the two equations intersect
x+y=1
10x+5y=7
a.(2/5, 3/5)
b (2/3, 1/3)
c.(1/5, 4,5)
d.( 1 3/4, -3,4)

Question

At what point will the graphs of the two equations intersect
x+y=1
10x+5y=7
a.(2/5, 3/5)
b (2/3, 1/3)
c.(1/5, 4,5)
d.( 1 3/4, -3,4)

anonymous · Answer

Its option a

anonymous · Answer

We need to solve two equation   Are you familiar with solving equation ?

anonymous · Answer

how did u get that

anonymous · Answer

Let me explain it 
x + y = 1
If we multiply this equation by 5 then we get 
5x + 5y = 5 getting this ?

anonymous · Answer

Now we need to subtract this equation from second equation |dw:1398032768294:dw|

anonymous · Answer

2/5

anonymous · Answer

correct so x = ( 2/5)   plug this value into first equation which is x + y = 1 
can you try  for this ?