What is the slope and y-intercept of the line x+2y=4?

1 Answer
May 17, 2018

Answer:

The slope is equal to #-1/2#, or #-0.5#, and the #y#-int is equal to #2#.

Explanation:

We know this because when we put the equation into

#y = mx + b#

form, you first move #x# to the right side by subtracting it from both sides

#2y = -x +4#

Next, you divide by two on both sides to finish off (to isolate #y#), so you get

#y= -.1/2x + 2#

And finally, since you have it in #y = mx + b# form already, (where #b# is the #y#-intercept) you get that slope (or #m#) is equal to #-1/2#.