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Write the slopeintercept form of the equation for the line.
A. y = 5/8x + 1/2
B. y = 8/5x  1/2
C. y = 5/8x + 1/2
D. y = 8/5x + 1/2
 one year ago
 one year ago
Write the slopeintercept form of the equation for the line. A. y = 5/8x + 1/2 B. y = 8/5x  1/2 C. y = 5/8x + 1/2 D. y = 8/5x + 1/2
 one year ago
 one year ago

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sassyjBest ResponseYou've already chosen the best response.0
This confuses me soooo badly!
 one year ago

CallistoBest ResponseYou've already chosen the best response.0
Note: To find yintercept, put x =0 into the equation. When you get the yintercept, you can eliminate one of the answers.
 one year ago

finaynayBest ResponseYou've already chosen the best response.0
you can determine slope using a diagram by doing rise over run (i'm not sure if you've ever heard that before) or you can do m=y2y1/x2x1
 one year ago

CallistoBest ResponseYou've already chosen the best response.0
Yes :) According to the slopeintercept form y=mx+c c is the yintercept, m is the slope of the line. So far, which answer is wrong?
 one year ago

finaynayBest ResponseYou've already chosen the best response.0
then use point slope form y – y1 = m(x – x1) and simplify (isolate y) which will leave you with slope intercept form
 one year ago

finaynayBest ResponseYou've already chosen the best response.0
you can immediately get rid of A because the line isn't negative
 one year ago

CallistoBest ResponseYou've already chosen the best response.0
Yup! B is wrong. Next task: find the slope! To find the slope, we need two points. Can you give me two pairs of coordinates of the points lining on the line? (PS: you can refer to the figure)
 one year ago

CallistoBest ResponseYou've already chosen the best response.0
Nope : Pair of coordinates of a point should be written like this: (x, y) Try one first, when x= 4, y=...?
 one year ago

sassyjBest ResponseYou've already chosen the best response.0
but unsure of the reasoning
 one year ago

CallistoBest ResponseYou've already chosen the best response.0
dw:1353731289465:dw Draw a vertical line at x=4, then it cuts at a point, find the y coordinate of that point,
 one year ago

CallistoBest ResponseYou've already chosen the best response.0
Yup, so, one of the points is at (4,3) Can you pick another one now?
 one year ago

CallistoBest ResponseYou've already chosen the best response.0
Nope : (x, y), you reversed the two :
 one year ago

sassyjBest ResponseYou've already chosen the best response.0
I dont know why I am not getting this. I just went back and read the entire chapter on it. It isnt sinking in at all =(
 one year ago

CallistoBest ResponseYou've already chosen the best response.0
(4, 2) is right... Actually, which parts are you confusing of?
 one year ago

sassyjBest ResponseYou've already chosen the best response.0
I'm just not getting where the graph fits in at all
 one year ago

sassyjBest ResponseYou've already chosen the best response.0
I see how you are trying to break it down, but I dont see how it all connects.
 one year ago

CallistoBest ResponseYou've already chosen the best response.0
Sorry, I was away for a while. We know that y=mx+c is the slope intercept form, where m is the slope and c is the yintercept. First, we find the yintercept, which is the easiest to find. The only thing we left to do is to find the slope. To find the slope, we need two points: \((x_1, y_1)\) and \((x_2, y_2)\). Slope = m = \(\frac{y_2  y_1}{x_2  x_1}\) After find the slope and the yintercept, we plug the values of them into y=mx+c.
 one year ago

CallistoBest ResponseYou've already chosen the best response.0
The more general way to find the equation is \[\frac{yy_1}{xx_1}=\frac{y_2y_1}{x_2x_1}\]Then, isolate y to get the slopeintercept form
 one year ago

sassyjBest ResponseYou've already chosen the best response.0
Okay. Thank you for trying to help.
 one year ago
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