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Mathematics 10 Online
OpenStudy (anonymous):

need help!

OpenStudy (anonymous):

does anyone know how to do slopes?

OpenStudy (kidrah69):

i know

OpenStudy (anonymous):

find the slope of the line through (-9,-10) and (-2,-5).

OpenStudy (kidrah69):

\[\frac{ y2-y1 }{ x2-x1 }\]

OpenStudy (kidrah69):

slope formula now plug in the numbers

OpenStudy (anonymous):

a. -5/7 b. 7/5 c. 5/7 d.-7/5

OpenStudy (anonymous):

ok i'll try and figure it out? please stay?

OpenStudy (kidrah69):

\[\frac{ -5-(-10) }{ -2-(-9) }\]

OpenStudy (kidrah69):

ill be here dont worry :)

OpenStudy (kidrah69):

do you know how to solve that?

OpenStudy (anonymous):

2 and 7?

OpenStudy (kidrah69):

7 is right not the 2

OpenStudy (anonymous):

5

OpenStudy (kidrah69):

yep so what the final answer?

OpenStudy (anonymous):

5/7 or c

OpenStudy (kidrah69):

5/7 would be correct :)

OpenStudy (anonymous):

can you help me with one more?

OpenStudy (kidrah69):

sure repost it though :)

OpenStudy (anonymous):

draw a line with a slope of 1/4 through the point (0,-4)

OpenStudy (kidrah69):

y=mx+b

OpenStudy (kidrah69):

m=slope

OpenStudy (anonymous):

is that the formula?

OpenStudy (anonymous):

hello?

OpenStudy (kidrah69):

yeah

OpenStudy (anonymous):

i dont get it?

OpenStudy (anonymous):

wait whats the b

OpenStudy (kidrah69):

OK slope is M so y=1/4x+b

OpenStudy (kidrah69):

B is the y intercept

OpenStudy (kidrah69):

look at your coordinate

OpenStudy (anonymous):

ok thanks for your help? but i have to go now

OpenStudy (kidrah69):

ok the y intercept is -4 so just put it in your equation and your welcome

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