What is the standard form equation of the line passing through (–2, 8) with a slope of 2?

Question

anonymous · Answer

can someone explain to me how to do this step by step

anonymous · Answer

what is the formula i will be using for this

anonymous · Answer

y=mx+b Where M is the slope and b is they y intercept

anonymous · Answer

8=2(-2)+b

anonymous · Answer

is this right so far?

anonymous · Answer

8=-4+b

anonymous · Answer

Looks right if you don't have the y intercept.

anonymous · Answer

how do i find the y intercept

anonymous · Answer

Hello there. The standard line form is something like this: Ax + By = C or Y = mx + C where m is the slope. So, if you put the values in, you will have something like 8 = -2x + C For more information, you can look this video up: http://www.youtube.com/watch?v=-8yM86_1fC4 Sorry, I'd help but they will ban me for being "too direct".

anonymous · Answer

Take x as 0 in the equation to find the y-intercept.

anonymous · Answer

i dont understand what you mean @Fall12-13

anonymous · Answer

Solve for b. and that's your y intercept. if the two points you solved have the slope 2. You have the right answer.

anonymous · Answer

b=4?

anonymous · Answer

@Nikee We cannot be too direct on this one.

anonymous · Answer

2x – y = 12

 2x – y = –12

 2x + y = 12

 2x + y = –12

anonymous · Answer

these are my answers

anonymous · Answer

i think the answer is b? is that right @Sir_Rico_of_Eureka

lstrasmann · Answer

Is it multiple choice? If it is can you give us the choices?

anonymous · Answer

2x – y = 12

 2x – y = –12

 2x + y = 12

 2x + y = –12

anonymous · Answer

i think its B but i dont know this is my last question on my pretest and i want to have all the correct answers

anonymous · Answer

hello???

lstrasmann · Answer

Im thinking about it. Give me a second.

anonymous · Answer

did u figure it out yet

lstrasmann · Answer

I think you have to plug in the y-intercept (i found out it is 8 + 2x) into$$8 = -2x + C $$like this$$8 = -2x + 8+2x$$then subtract 8$$0 = -2x + 2x$$then add -2x and 2x$$0=0$$wait, maybe that's wrong. but that's what i would do, if it isn't a choice i would just guess at that point.

anonymous · Answer

Sorry I had to get to class. If you plugged it all in and got 4 for b then you'll get y=2x+4 which is 2x-y =-4 class is starting but redo your math

anonymous · Answer

2*-2 = -4