SOLUTION: Write an equation of the line whose x-intercept is 5 and y-intercept is -3.

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Question 805791: Write an equation of the line whose x-intercept is 5 and y-intercept is -3.
Found 3 solutions by oscargut, mananth, KMST:
Answer by oscargut(2103) About Me  (Show Source):
You can put this solution on YOUR website!
answer: y= (3/5)x-3
If you need more help today, you can contact me now at:
mthman@gmail.com
Thanks

Answer by mananth(16946) About Me  (Show Source):
You can put this solution on YOUR website!
%28x%2F5%29%2B%28y%2F-3%29+=+1

%28-3x%2B5y%29%2F-15+=+1
-3x+5y=-15*11
3x-5y=165

Answer by KMST(5328) About Me  (Show Source):
You can put this solution on YOUR website!
highlight%28x%2F5%2By%2F%28-3%29=1%29 is the fastest answer.
You could call that the intercepts form of the equation for the line.
If a line passes through points (a, 0) and (0, b), its x- and y-intercepts,
then x%2Fa%2By%2Fb=1 is an equation that represents the line.
You may have been taught such a form, with that name or another name
Since some people do not like denominators, I could multiply both sides of the equal sign times 15 to get
highlight%283x-5y=15%29
Multiplying times other factors you can get a variety of answers.
You can also solve for y to get the unique equation in slope intercept form
15=3x-5y-->5y=3x-15-->highlight%28y=%283%2F5%29x-3%29
If you had not been shown the fact that
"if a line passes through points (a, 0) and (0, b), its x- and y-intercepts,
x%2Fa%2By%2Fb=1 is an equation that represents the line,"
then you could easily write a system of equations by plugging in the coordinates of those intercepts into y=mx%2Bb .
Solving the system would get you m and b , and then you could write the equation in the y=mx%2Bb form.
system%28-3=m%2A0%2Bb%2C0=m%2A5%2Bb%29-->system%28b=-3%2C5m-3=0%29-->system%28b=-3%2C5m=3%29-->highlight%28system%28b=-3%2Cm=3%2F5%29%29