A pair of equations is shown below.

x + y = 2
y = one halfx + 5

If the two equations are graphed, at what point do the lines representing the two equations intersect?

(4, −2)
(−2, 4)
(2, 5)
(5, −2) Please help I will fail if I dont do this plese help me

Question

A pair of equations is shown below. 

x + y = 2
y = one halfx + 5 

If the two equations are graphed, at what point do the lines representing the two equations intersect?

 (4, −2)
 (−2, 4)
 (2, 5)
 (5, −2) Please help I will fail if I dont do this plese help me

butterflydreamer · Answer

firstly, you want to make y the subject in the first equation " x + y = 2" :)

anonymous · Answer

ok

anonymous · Answer

Then what

butterflydreamer · Answer

so can you tell me what it would be?

anonymous · Answer

I know you isolate it but I do not really understand

butterflydreamer · Answer

$$x + y = 2 \rightarrow y = -x + 2 $$ right? 
All i did was subtract "x" from both sides to make y the subject :)

anonymous · Answer

ok then what

anonymous · Answer

you do it to x also

butterflydreamer · Answer

so  now we have two equations:|dw:1436241915931:dw|