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Scatter Plots Part 2

Added Apr 06, 2020 •

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before we get into doing some scatterplots I wanted to do a recall this is going to be needed to find the equation for the line of best fit and it goes along with what we did earlier this year in review writing equation of a line in slope intercept form slope intercept form is y equals Cosby said to write an equation in slope intercept form we need to find the slope we need to find the Y intercept and the y-intercept is the point on the y-axis 0, some number so far we call problem let's do 7, 4 and 9, 8 I want to write an equation Y I need two pieces of information I need the slope can you find what that is I also need to find B which weed said with the y intercept neither one of these is a y-intercept because her to do the Y intercept the X 000 and neither one of these formula slope formula is Y2 - y1 / X-2 - I went ahead and labeled my points X1 y1 X2 Y2 remember the ones I just mean that they came from the second I plug in my formula and this will help me find them equal 8 420 - y1 over and I get my slope to be see which reduces to 2 so I know my slip is too so I have half of my information that was my step one I need to find intercept that I'm going to use 2 and one of the points it doesn't matter which point you use you'll get the same answer that I get even if you use it how many use the first point but again you could use the second song as your math is right inside the right you'll get the same exact thing and I'm going to plug them into you intercept form so do I have why I have a y right here so I'm going to write down for equals I know that do I know with a Nexus 5X what time is it by 7 and be I don't know and that's why I'm trying to find now I have enough information to find that using inverse operations might jump up here at wall some room here -10 equals B so I have my y-intercept and I can write my answer which is the equation that says to write an equation equation yet I found the parts of the equation. Write an equation yes to the answer is equals m we know it's too early right acts and says + 10 is the equation of the line for the 2 points

Uploaded by Nicole Beverly.

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Scatter Plots Part 2

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