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anonymous
 one year ago
WILL FAN AND METAL!!!
A line passes through (2, 8) and (4, 12). Which equation best represents the line?
y = 1 over 2x + 6
y = 2x + 7
y = 2x + 4
y = 1 over 2x + 10
anonymous
 one year ago
WILL FAN AND METAL!!! A line passes through (2, 8) and (4, 12). Which equation best represents the line? y = 1 over 2x + 6 y = 2x + 7 y = 2x + 4 y = 1 over 2x + 10

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eyust707
 one year ago
Best ResponseYou've already chosen the best response.1The formula for a line can look like thisdw:1437333815430:dw

eyust707
 one year ago
Best ResponseYou've already chosen the best response.1The only thing we need to do is figure out what y1, x1 and m is.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0I do not understand the formula though :/

eyust707
 one year ago
Best ResponseYou've already chosen the best response.1Well if we figure out these three numbers we can plug them in, simplify and we'll have our answer dw:1437333928564:dw

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0When you say plug in numbers do you mean guessing them?

eyust707
 one year ago
Best ResponseYou've already chosen the best response.1Nope we need to calculate them based on the two points given. "m" represents the slope of a line. If you are given two points the best way to fin the slope is to calculate "the change in y"/"the change in x"

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0What do you mean by that change in Y and X?? Sorry if I sound clueless :/

eyust707
 one year ago
Best ResponseYou've already chosen the best response.1(2, 8) and (4, 12) are our points. Whenever we see two number in parenthesis separated by a comma this is telling us where a point is located on a graph. the first number tells us how far over to go left and right (your x value). The second number tells us how far to go up and down (your y value). dw:1437334303980:dw To get to point (2,8) you would start at the origin go over 2 spaces then up 8. dw:1437334574867:dw If you have two points, to get from one to another you also need to go over by a certain amount and up by a certain amount. dw:1437334702484:dw In this case, to get from the first point to the second, we have to go over 2 and up 4 See y goes from 8 to 12. 12  8 = 4 so change in y is 4 x goes from 2 to 4. 42 = 2 so change in x is 2 change in y/ change in x = 4/2 4/2 = 2 so m = 2

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Sorry I resent that message

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Okay but It askes me which best represents and equation not the answer

eyust707
 one year ago
Best ResponseYou've already chosen the best response.1Yes yes we are getting there, whats more important however than finding the answer is for you to develop an understanding that way you can find all the rest of the answers by yourself!

eyust707
 one year ago
Best ResponseYou've already chosen the best response.1Do you understand how I got m?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0You had changed Y and then X=4/2 so then 4/2 equals 2 so M=2

eyust707
 one year ago
Best ResponseYou've already chosen the best response.1awesome! now you know how to find "m" or "slope" if given two points! the only other things we need is y1 and x1 Well thats easy, y1 is the y value of the first point and x1 is the x value of the first point.

eyust707
 one year ago
Best ResponseYou've already chosen the best response.1What is the y value of (2,8) ?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Okay so would I divide 4,12 by 2 or something?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0lol sorry wrong number

eyust707
 one year ago
Best ResponseYou've already chosen the best response.1What is the y value of (2,8) ?

eyust707
 one year ago
Best ResponseYou've already chosen the best response.1*hint* i explained this and gave you the answer earlier in this thread ;)

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Okay but Idk how you find that?

eyust707
 one year ago
Best ResponseYou've already chosen the best response.1Whenever we see two number in parenthesis separated by a comma this is telling us where a point is located on a graph. the first number tells us how far over to go left and right (your x value). The second number tells us how far to go up and down (your y value).

eyust707
 one year ago
Best ResponseYou've already chosen the best response.1But the y value of the point (2,8) is simply 8

eyust707
 one year ago
Best ResponseYou've already chosen the best response.1what is the x value of the point (2,8) ?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0I thought x was 4,12?

eyust707
 one year ago
Best ResponseYou've already chosen the best response.1So if we recall: m=4 y1=8 x1=2

eyust707
 one year ago
Best ResponseYou've already chosen the best response.1Now all we need to do is put those numbers into this equation: dw:1437336182607:dw

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0:/ It is the only one that has 4 in the answer and 2

eyust707
 one year ago
Best ResponseYou've already chosen the best response.1dw:1437336219281:dw

eyust707
 one year ago
Best ResponseYou've already chosen the best response.1All you need to do now is simplify this equationdw:1437336341302:dw

eyust707
 one year ago
Best ResponseYou've already chosen the best response.1dw:1437336351506:dw

eyust707
 one year ago
Best ResponseYou've already chosen the best response.1dw:1437336364838:dw

eyust707
 one year ago
Best ResponseYou've already chosen the best response.1Add 8 to both sides and you are done

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Wait on the equaton that is represented black?

eyust707
 one year ago
Best ResponseYou've already chosen the best response.1dw:1437336473127:dw

eyust707
 one year ago
Best ResponseYou've already chosen the best response.1dw:1437336518614:dw

eyust707
 one year ago
Best ResponseYou've already chosen the best response.1dw:1437336564148:dw
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