Question

Graph the following {(x,y): x + y = 5}

Answer 1

For this case we have the following function:

$y = 5-x$

We look for the points of intersection with the x axis, doing y = 0

$0 = 5-x\\x = 5$

We look for the points of intersection with the y axis, doing x = 0

$y = 5-0\\y = 5$

We can also observe that the slope is -1.

$y = mx + b\\y = -x + 5$

Answer:

See attached image