Question

How to graph 2x+4y=28

Answer 1

y = -1/2 + 7

Explanation:

You have to isolate y so...

2x + 4y = 28 is the original problem. Then subtract 2x on both sides. After you subtract 2x, you have to divide 4 to both sides. Then after you divide 4 to both sides, it'll be y = -2/4 + 7. After that, simplify -2/4, and you'll get y = -1/2 + 7 as your answer.

Answer 2

Greetings!

Explanation:

First, set the x value to be 0:

2(0) + 4y = 28

4y = 28

y = 28/4 = 7

So when x = 0, y = 28/4

Now set the y value as 0:

2x + 4(0) = 28

2x = 28

x = 14

So when x = 14, y = 0

Simply plot these two values:

(0, 7) and (14 , 0)

And join them up, an attatched image shows this graph.

Hope this helps!