Answer:
get a piece of graphing paper and count out the squares and then when you make the triangles you should have your answer.
Step-by-step explanation:
all i know is that it's not the third one hope this helps!
Y = 3x + 4
x + y = 8
Substitute 3x + 4 in for y in the second equation.
x + 3x + 4 = 8
Combine like terms.
4x + 4 = 8
Subtract 4 from both sides.
4x = 4
Divide 4 off of both sides to find the value of x.
x = 1
Now plug 1 into the second equation for x.
1 + y = 8
Subtract 1 from both sides.
y = 7
(1,7) is the final answer.
Three solutions are: (2,14) (1,5) (3, 23)
I kind a get the answer for this one but I’m not sure if that’s the correct one but I think your answer will be -6