what is an equation of the line in slope intercept form m=3 and the y intercept is (0,4)

- hayhay12345

what is an equation of the line in slope intercept form m=3 and the y intercept is (0,4)

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- hayhay12345

y=4x+3
y=-3x+4
y=4x-3
y=3x+4

- hayhay12345

i think its the last one

- candyme

The slope intercept form is y=mx+b.
Since m is the slope, we can fill in y=3x+b
We also know that b is the y part of the y intercept.
SO the full equation is y=3x+4

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- candyme

Great! You had it!

- hayhay12345

i got it right?!
sweet

- hayhay12345

can u help me with another?

- candyme

Sure!

- hayhay12345

im going to screen shot it

- hayhay12345

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- candyme

This one will be much easier if you get the y all by itself on the left. So start by adding the x to both sides.
-12y-5x+5x=5x+11
-12y=5x+11
Now you want to divide by 12\[y=-\frac{ 5 }{ 12 }x-\frac{ 11 }{ 12 }\]

- candyme

So the slope is the number in front of the x
\[-\frac{ 5 }{ 12 }\]
And the y intercept is the number that has no variable\[-\frac{ 11 }{ 12 }\]

- hayhay12345

so it is the third one right?

- candyme

That's right!

- hayhay12345

thanks!! do u miind checking a few more for me i am pretty sure they are right i just want to make sure.

- candyme

Sure

- hayhay12345

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- hayhay12345

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- hayhay12345

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- candyme

Ok, on the first one the picture cut off that last piece of the equation. Based on your slope the answer is either b or c, but you need that number on the right side of the equals sign to finish it

- candyme

The second one you posted you are correct

- hayhay12345

for the first on it was x+2y=4

- candyme

For this one there is no slope, so there won't be a number with the x. Vertical lines are always written as x=__. So this graph is x=2

- candyme

\(\color{#0cbb34}{\text{Originally Posted by}}\) @hayhay12345
for the first on it was x+2y=4
\(\color{#0cbb34}{\text{End of Quote}}\)
Ok, so when you divide by 2 you will have \[y=-\frac{ 1 }{ 2 }x+2\]

- candyme

So on it your graph would be c because it hits the y axis at 2

- hayhay12345

ohhhh ok thank you!! can u take a look at these two?

- hayhay12345

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- candyme

For the vertical line above, you always write the equation as x=__. Since it crosses the x axis at (2,0) you write x=2

- hayhay12345

i put the wrong one sorry

- hayhay12345

its this one

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- candyme

Both of those are correct :)

- hayhay12345

sweet i hate to ask again but could u check like 4-5 more for me plz?

- candyme

I can do that :)

- hayhay12345

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- hayhay12345

thats for one of them

- hayhay12345

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- hayhay12345

i had b for 14 btw

- hayhay12345

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- candyme

For that first one it is going to be d because it makes it skinny and it isn't negative so it won't flip upside down

- candyme

For 14 you are correct

- candyme

Also letter b for the one after that, because the > means dashed line and shaded above

- hayhay12345

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- hayhay12345

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- hayhay12345

thats all other than what i need to finish working out

- hayhay12345

i just need those last one i posted checked before i finish the complete work

- candyme

Sorry I froze up there for a few minutes. I'll look at these for you real quick

- hayhay12345

ok and its all cool i was working out some others ones

- candyme

The first one should actually be d because you want the shading to be on the bottom area.

- hayhay12345

ohh ok

- candyme

On the absolute value graph, you need to move that 4 over to the other side. That will make it y=|x+2|-4 so it is actually c

- candyme

The one about DVDs was correct

- hayhay12345

@candyme can you check these for me?

- hayhay12345

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