Help Solve the system by substitution.
y=x-1
y=-2x+5
Could you show me how to these types of problems?
Thanks

Question

Help Solve the system by substitution.
y=x-1
y=-2x+5
Could you show me how to these types of problems?
Thanks

opcode · Answer

$$y=x-1$$
$$y=-2x+5 \implies -2x+5 = x-1$$
$$-2x+5 = x-1$$
$$-x+5 = -1$$
$$-x = -6$$
$$x = 6$$

Can you go from there?

opcode · Answer

Hint: You need to solve for $y$.

anonymous · Answer

So from where you left it I would replace x for 6 in the original equation?

opcode · Answer

Oops, I made an error $x = 2$ sorry, I am a bit sleeply.
Yes, you now insert $x$ into the original equation.
$$y=2-1$$
$$y=1$$
$$1=-2(2)+5$$
$$1=-4+5$$
$$1=1$$

anonymous · Answer

I think I understand how to do these now. Thank you for the help.

opcode · Answer

Yeah, they tend to be easy, it's just late where I live so I made a mistake, sorry :-P.