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Mathematics 19 Online
OpenStudy (gabylovesyou):

The travel path of a ferry heading from a mainland harbor toward an island jetty is graphed on a coordinate grid. The graph is a straight line with a slope of -3/2. If the mainland harbor is located at point (−3, 5), which graph represents the travel path of the ferry?

OpenStudy (gabylovesyou):

OpenStudy (gabylovesyou):

@johnweldon1993

OpenStudy (gabylovesyou):

@ParthKohli

OpenStudy (phi):

First step: which lines go through the point (-3,5) ? the answer will be one of those lines

OpenStudy (gabylovesyou):

A and B

OpenStudy (phi):

now we need the slope of each line.

OpenStudy (phi):

count how many down and then how many over to get change in y and change in x

OpenStudy (gabylovesyou):

how ?

OpenStudy (phi):

pick a spot where the line goes exactly through a point where the x/y lines cross then count down 3 and then over 2 (that will be a slope of -3/2) are you on the line ?

OpenStudy (gabylovesyou):

yes

OpenStudy (phi):

for which choice A or B ?

OpenStudy (gabylovesyou):

A

OpenStudy (phi):

yes. line in B will not work if you check it.

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