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Mathematics 7 Online
OpenStudy (anonymous):

Find the point L such that JL and KL form a 3:1 ratio.

OpenStudy (anonymous):

OpenStudy (anonymous):

(−1.25, 2.5) (−0.5, 1) (2.25, −0.5) (0.5, 2)

OpenStudy (anonymous):

@ganeshie8

OpenStudy (anonymous):

@ganeshie8 here is the post question

OpenStudy (anonymous):

@ganeshie8 will you please help me with this question

ganeshie8 (ganeshie8):

hey still here @sksxs3

OpenStudy (anonymous):

yes

ganeshie8 (ganeshie8):

look at the given line segment, you want to find a point on it that splits the segment in 3:1 ratio |dw:1435244383121:dw|

OpenStudy (anonymous):

ok so how do i do that

ganeshie8 (ganeshie8):

how far are the points horizontally ? |dw:1435244482276:dw|

ganeshie8 (ganeshie8):

just count he grids horizontally

OpenStudy (anonymous):

7 spaces

ganeshie8 (ganeshie8):

Yes, so we want the point to be at 3/4*7 away from J horizontally 3/4*7 = ?

OpenStudy (anonymous):

can i turn 3/4 into a decimal then multiple it by 7 or will that be to complicated

ganeshie8 (ganeshie8):

Exactly! just do that.

OpenStudy (anonymous):

I did 0.75 x 7= 5.25

ganeshie8 (ganeshie8):

add -3 to that

ganeshie8 (ganeshie8):

5.25 - 3 = ?

OpenStudy (anonymous):

2.25

ganeshie8 (ganeshie8):

Yes, thats the x coordinate of required point. look at options

OpenStudy (anonymous):

so the answer is C because thats the only one with 2.25 in it

OpenStudy (anonymous):

Quick question if you don't mind me asking… do you think you could quickly show me how to find the y coordinate because I am not the best with ratios and I would really appreciate it if you showed me how?!! thanks @ganeshie8

ganeshie8 (ganeshie8):

sure :) how far are the points J and K vertically ? |dw:1435245688565:dw|

OpenStudy (anonymous):

oh sorry i didn't see u respond its 6 spaces

ganeshie8 (ganeshie8):

Yes, so you want the point to be 3/4*6 away from J 3/4*6 = ?

OpenStudy (anonymous):

4.5

OpenStudy (anonymous):

then don't you subtract 3 from that or no

ganeshie8 (ganeshie8):

subtract that from y coordinate of J : 4 4-4.5 = ?

OpenStudy (anonymous):

oh ok

OpenStudy (anonymous):

-0.5

OpenStudy (anonymous):

Thank so much for your help @ganeshie8 I will give you a medal to for helping me thank you

ganeshie8 (ganeshie8):

yw :)

OpenStudy (anonymous):

btw were u the one who gave me the medal @ganeshie8

OpenStudy (anonymous):

cause if u were than thank you

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