x + 3y= 4
-2x+ y= -1 (-2x from the other side)
2x+ 6y= 8 (multiply by 2)
-2x+ y= -1
7y =7
y= 1
x+ 3(1)= 4 (you do this to find the y)
x+ 3= 4
x= 1 (-3 from the other side)
x= 1 y=1 (1,1)
Answer:
I think this is the right answer but last two signs are incorrect
Hope this will help
Answer:
1 and -1
Step-by-step explanation:
Factoringfind a number set that equals zero and when multiplyed, becomes -1.
1 and -1 multiply to -1 and equal 0,
so x^2-1 turns into (x+1)(x-1)
solve for both x+1=0 and x-1=0
x+1=0
x=-1
x-1=0
x=1
To solve this, graph both lines and the ordered pair where they intersect is your answer. (0, 3)
5y = 2x.....y = (2/5)x
y = (2/5)x
10y = 4x.....y = 4/10x....y = (2/5)x
5xy = 2....y = 2/(5x) <==== this does not belong because it is not a linear equation like the rest of them are.