Question

Quick help on Algebra 1 "The line of best fit"

Write the equation of the line passing through those two points using the point-slope formula
y - y1 = m(x - x1). Show all of your work. Remember to find the slope of the line first.

The two points are: (43.2,13),(67.2,21)

Answer 1

start by finding the slope
\[\frac{21-13}{67.2-43.2}\]

Answer 2

Okay one second

Answer 3

8/24

Answer 4

i get \(\frac{8}{24}=\frac{1}{3}\) i think that is right

Answer 5

then go to
\[y-21=\frac{1}{3}(x-67.2)\]

Answer 6

Is that it?

Answer 7

@satellite73

Answer 8

unless you want to multiply out and solve for \(y\)

Answer 9

Nope! Thanks :)

Answer 10

Wait

Answer 11

depends on the form you want to put the line it
it is not that hard, use a calculator

Answer 12

@satellite73 i just reposted the question from before

Answer 13

How'd you go from 8/24=1/2 to y-21...

Answer 14

there is no \(\frac{1}{2}\) it is \(\frac{8}{24}=\frac{1}{3}\) by reducing the fraction
that is the slope \(m\)
then use the point slope formula that you wrote above

Answer 15

that is why you get
\[y-21=\frac{1}{3}(x-67.2)\]
\[y-21=\frac{1}{3}x-22.4\]
\[y=\frac{1}{3}x-1.4\]

Answer 16

and that ^ is the final answer?

Answer 17

that should do it, yes

Answer 18

thank you very much!

Answer 19

yw