Question

How many solutions does this system have?
y=3x-5
y=-x+4

Answer 1

x^1 so only one

Answer 2

if it were x^2 then it would have 2

Answer 3

y=-3x
-9x-4y=21

Answer 4

well you can replace y with what it equals.\[y=3x-5\]\[y=-x+4\]\[-x+4=3x+5\]\[4=2x+5\]\[-1=2x\]\[x=\frac{-1}{2}\]

Answer 5

then, you have to place \[-0.5~or~\frac{-1}{2}\] into \[y=3x-5\]in place of x. so \[y=3(-0.5)-5\]can you simplify that?