SOLUTION: I need assistance writing slope-intercept form of a line between two given points. An example would be writing slope-intercept form of a line through points (1,-3) and (0,4.

Question 636050: I need assistance writing slope-intercept form of a line between two given points. An example would be writing slope-intercept form of a line through points (1,-3) and (0,4.
Answer by Alan3354(69443) (Show Source): You can put this solution on YOUR website!
writing slope-intercept form of a line through points (1,-3) and (0,4).
-------------
Find the slope, m
m = diffy/diffx = 7/(-1)
m = -7
------
Use y = mx + b and either point to find b, the y-intercept
-3 = -7*1 + b
b = 4
--> y = -7x + 4
===================
If you know determinants:
|x +y 1|
|1 -3 1| = 0
|0 +4 1|
------------
(Plus signs for alignment)
x*(-3 - 4) - y*(1 - 0) + 1*(4 - 0) = 0
-7x - y + 4 = 0
y = -7x + 4
RELATED QUESTIONS
I need assistance with writing point-slope form for an equation with the slope and one... (answered by ewatrrr)

What do you do when writing an equation of a line given 2 points? What do you do... (answered by venugopalramana)

I need help with finding out the slope intercept of a line when given two points. What... (answered by solver91311)

I need help with writing an equation in slope intercept form for the following line:... (answered by rfer,stanbon)

I need a step-by step example of writing the equation of the line which passes through... (answered by jim_thompson5910)

hello, I need help writing an equation in slope-intercept form: Passes through (answered by elima)

I need help writing an equation of the line passing through (3,-9) and parallel to the... (answered by htmentor)

I need help with writing equations of the line with the given slope and y intercept this... (answered by funmath)

I need assistance in writing the slope-intercept equation for the line with the given... (answered by sudhanshu_kmr)