Question

find the equation of the line containing the first and the last data points . (4,3),(5,5),(6,6),(7,9),(8,11),(9,13),(10,15) y would = ??

Answer 1

We just need to use 2 points to find the answer so let's use
(4,3) and (5,5)
5 - 3
over
5-4
=
2/1
Slope is 2.
Find y intercept by using 4,3 and going left 4x which means the line goes down 8y
y = 2x -5