Question

solve each linear equation..

y=x+4
y=-2x+1

I just need help on one of them.

Answer 1

you can't "solve" a linear equation. It just describes a function.

Now, if you want to see where the two functions are the same, you need

x+4 = -2x+1
3x = 3
x = 1
so, y=5

If you want to find the root, where y=0, then just set y=0 and solve for x:

0 = x+4
x = -4

Answer 2

As you said, that you can't solve a linear equation, that's what it says in the textbook.. also I've checked the back of the book and it says the coordinates are (-1,3). Sorry for the bother.

Answer 3

I am sure Steve meant to type
3x = -3
thus x = -1 and therefore y = 3
just like your textbook said