how do i graph x + y = 1

put y on one side y=-x+1

im doing an online test and its asking me to find the equation that matches the graph. But im not sure how to figure it out.

well the graph should have a negative slope with 1 as y-intercept look for a graph with those tips.

it goes from -1 then goes up one right one up one right one....so im guessing the equation is x+y=1...dude im not that good in math...i realy suck sometimes the other answers it gives me are:x – y = –1 ; x + y = –1 ; –x + y = –1

To graph the equation x + y = 1, you can follow these steps:

1. Start by rearranging the equation to isolate y: y = -x + 1. This form, known as slope-intercept form, makes it easier to identify the slope and y-intercept.

2. Take note of the coefficient of x, which is -1. This represents the slope of the line. A negative slope means the line will be slanting downwards from left to right.

3. The constant term, 1, represents the y-intercept. This is the value of y when x is zero, which, in this case, is the point (0,1) on the graph.

4. From the y-intercept, you can identify additional points on the line by using the slope. For each unit traveled to the right (positive x direction), move downwards by one unit (negative y direction). Similarly, for each unit traveled to the left (negative x direction), move upwards by one unit (positive y direction).

5. Using these points, you can plot them on a graph and connect them to form a straight line. Remember to use a ruler or straight edge to maintain the line's linearity.

To find the equation that matches the graph, you need to look for an equation with a negative slope and a y-intercept of 1. From the options you provided, the correct equation is x + y = 1.