Graphing a linear equation?

Question

When you have an equation like y = -x or Y = 1
How do you solve it, I kind of forgot?

Answer 1

y=1
1 would be 1/1 so graph (1,1)
y=-1
this would be the same but negative, graph (1,-1)

Answer 2

Well, y=1 means that for any x value your y value will always be one. So, if you graph it, it should look like a horizontal line at y=1.

y= -x means that for every y value, your x value will be the same thing, only negative. So your graph should go straight through the origin and the points (-1,1) and (1,-1)

Answer 3

basically if it's y=1, then its just graph a point (1) along the y axis and draw a straight vertical line from the top to bottom.
if it's y= -x, then substitute a number for x and u have ur answer
tip: use table of values!!!

x -x (expression) y
-------------------------------------
-2 -(-2) 2
-1 ....... ......
0 ........ .......
1 ........ .......
2 ......... .........

next, take the x and put it with the y to make a coordinate
(-2,2) and so on and so forth.

and that's all about all u do!

Answer 4

pick an x value and plug it in, and that will give you the y value.

for example, for y=-x

say x=0
then y=0
so a point on the line is (0,0)

then pick like x=2
y=-2
(2,-2)

then say x=-2
y=2
(-2,2)

keep doing this until you have enough points to plot the line on the graph

Answer 5

y=1 is a horizontal line on 1. y=-x is also known as y=-1x so you go to the point (0,0) and then go down one over one.

Answer 6

To find the x intercept, make y = 0
To find the y intercept, make x = 0