Help! Explain as well!

Identify the correct slope and y intercept of the equation 2x + 4y = 12.
Answer

slope = one half; y intercept at (0, 4)

slope = one half; y intercept at (0, 3)

slope = -negative one half; y intercept at (0, 3)

slope = 2; y intercept at (0, 12)

Question

Help! Explain as well!

Identify the correct slope and y intercept of the equation 2x + 4y = 12.
Answer
		
slope = one half; y intercept at (0, 4)
		
slope = one half; y intercept at (0, 3)
		
slope = -negative one half; y intercept at (0, 3)
		
slope = 2; y intercept at (0, 12)

anonymous · Answer

The first thing to do is to make the relation explicitly as function of y: 

$$2x+4y=12 \rightarrow 4y = 12-2x$$

Dividing by 4 gives you $$y=3-1/2x$$

So the slope is 1/2, and the y intercept can be found by solving y = 0

anonymous · Answer

Sorry, by solving for x = 0!

anonymous · Answer

Which gives y = 3 =)

anonymous · Answer

So, to summarize: 2x+4y=12 has the slope -1/2 and y intercept (0.3)

anonymous · Answer

Hmm.... I still don't understand...

hero · Answer

y = mx + b

m = slope
b = y -intercept

If you write the given equation in that form, you will be able to find the slope and y-intercept