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Suppose you are asked to write an equation of the line in the scatter diagram below. What two points would you use to write the point-slope equation?(DIAGRAM CANT COPY)
$$(67,170),(79,220)$$
Algebra
Chapter 3
Graphing Linear Equations and Inequalities in Two Variables; Functions
Section 6
Point–Slope Form
Graphs and Statistics
Equations and Inequalities
Linear Functions
Systems of Equations and Inequalities
Missouri State University
Oregon State University
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So in this problem, we're given a scatter pot, and we're being asked what two points we would use to write the point slope form equation. So know this that they already graft in, align the best fit and know this how on that line they picked out two points. We simply need to figure out what those orders are as ordered pairs. So the first thing we have to look at is take a look at your X axis. No, this that they have a break in there so that Graff X Value really starts to 65. But a few then, though this account by once now take a look at your y axis. They also use a break simple. And they started at 1 40 then they're counting by tents. So you just have to make sure that you account for this when you're figuring out your ordered pairs. So to figure out that first point on the line starting at 65 I would have to go right to and up three. So that tells me I'll have the point 67 because again, our exes are counting by one's what? Remember our wise, they're counting by 10. So if I go up three, I'm really going up 30. So that would leave me at the 300.1 70. So the first order pair I would use is 67 on 1 70 Now, the second point on the line that's up near the top is terms of its X value is one to the left of 80. So that tells me that my ex value will be 79. Now, if you know this, it's why value is right at 220. So that will be the Y value of this point. So the second order pair we would use is 79 2 20
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