Question

Use the intercepts to graph the equation: x+2y=4
How would I go about doing this

Answer 1

y= (-x+4)/2

Answer 2

\[y=-\frac{1}{2}x+2\]

Answer 3

alsamixer, when you are dont here, can you look at something for me?

Answer 4

nevermind lol

Answer 5

so would my graph look lie this when im done?

Answer 6

no, y intercept = 2
x intercept = 4

Answer 7

It's clear that
\[\frac{x}{\text{x-intercept}}+\frac{y}{\text{y-intercept}}=1\]
is the equation of a straight line. Because, set x = 0, you get the y = y-intercept and vice versa. Now, your problem is simple, just divide by the right hand side to get,
\[\frac{x}{4}+\frac{y}{2}=1\]
intercepts are 4 and 2 :)

Answer 8

exactly, the graph is wrong!

Answer 9

oh yeah.. lol guess it shows that i haven't done graphing for about 8 years :P

Answer 10

it shud be like this
the red line is the one u need

Answer 11

sunu000 what software you use draw the graph?

Answer 12

Kmplot...i am on my ubuntu linux now..:p..
i have a dual boot ... u can use microsoft math for windows i think :)

Answer 13

how?

Answer 14

Microsft draw graph?

Answer 15

microsoft math draws graphs i think...u just put in a function and it draws the graph...

Answer 16

@arman: I solved one of your posted questions as well :)

Answer 17

put x=0 you get y=2 and putting y=0 you get x=4 so along the axis mark the point A(4,0) and along y-axis mark the point B(0,2) and join AB...then AB will be the reqd line