Question

Write the equation of a line that passes through the points (2,4) (1,-3) in slope-intercept form

Answer 1

use formula...
m=(y1-y)/(x1-x)
m=(4-(-3))/(2-1)
m=7/1=7
then equation of the line:
y-4=7(x-2)
y=7x-14+4
y=7x-10

Answer 2

Thanks,what about this one..
Write the equation of the line that passes through (1, 3) and (4, 4) in standard form.

Answer 3

the same approach as above...

Answer 4

m=(4-3)/(4-1)
m=1/3
y-3=1/3 (x-1)
y=1/3 x -1/3 +3
y=1/3 x +8/3
standard form - multiply both sides by 3 & write all on one side:
x-3y+8=0

Answer 5

You really are a lifesaver (: can i bother you for one last one?

Part 1: Write the equation of the line that passes through the points (3, 4) and (-3, -8) in point-slope form.
Part 2: Using complete sentences, explain whether or not it matters which point is used in the final answer.

Answer 6

Part2:
to get the final answer - equation of the line it is NOT matter which point is used.
you can first one (see above) or second one the answer should be the same

Answer 7

Part1:
m=(4-(-8))/(3-(-3))=12/6
m=2
y-4=2 (x-3)
y=2 x -6+4
y=2 x -2
this is in slope-intercept form

Answer 8

YOU can try second point - should be the same answer:
y-(-8)=2(x-(-3))
y=2x+6-8
y=2x-2
the same!