Mathematics
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OpenStudy (anonymous):
Write the equation in slope-intercept form of the line that has a slope of -7 and y-intercept 6.
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jimthompson5910 (jim_thompson5910):
Remember, in general, the equation of a line is y = mx+b where m is the slope and b is the y-intercept.
OpenStudy (anonymous):
Ok so are you going to help me or not?
jimthompson5910 (jim_thompson5910):
so what is the value of m?
OpenStudy (anonymous):
I dont know what?
jimthompson5910 (jim_thompson5910):
the slope is given as -7, so m = -7 since m is the slope
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OpenStudy (anonymous):
Ok
jimthompson5910 (jim_thompson5910):
what about b?
OpenStudy (anonymous):
6?
jimthompson5910 (jim_thompson5910):
good
jimthompson5910 (jim_thompson5910):
so
y = mx+b
turns into
what???
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OpenStudy (anonymous):
6= idont know the rest
jimthompson5910 (jim_thompson5910):
you agree that m = -7 and b = 6 correct?
OpenStudy (anonymous):
yes
jimthompson5910 (jim_thompson5910):
so we replace m with -7 and we replace b with 6 to go from
y = mx+b
to
y = -7x+6
OpenStudy (anonymous):
Ok and? then what
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jimthompson5910 (jim_thompson5910):
and that's it, that's the answer since it's in slope intercept form
OpenStudy (anonymous):
so i write online that it's y= -7x+6
jimthompson5910 (jim_thompson5910):
yes
OpenStudy (anonymous):
Can you help me with another one real fast @jim_thompson5910
jimthompson5910 (jim_thompson5910):
sure
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OpenStudy (anonymous):
k thanks. here it is. write the equation in slope-intercept form of the line that has a slope of 5 and y-intercept of -3.
jimthompson5910 (jim_thompson5910):
Same idea, but this time the slope is 5, so m = 5,
The value of b is then what?
OpenStudy (anonymous):
-3
jimthompson5910 (jim_thompson5910):
good, so b = -3
jimthompson5910 (jim_thompson5910):
So y = mx+b turns into what?
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OpenStudy (anonymous):
y=5x+-3
jimthompson5910 (jim_thompson5910):
very good, we can write +-3 as just -3
So y = 5x+-3 can be written as y = 5x-3
jimthompson5910 (jim_thompson5910):
so the final answer is y = 5x-3
OpenStudy (anonymous):
So thats the final answer??!
jimthompson5910 (jim_thompson5910):
yes
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OpenStudy (anonymous):
Thanks
jimthompson5910 (jim_thompson5910):
you're welcome