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Mathematics 12 Online
OpenStudy (anonymous):

HELPPPP! PLEASE!!!!!!!! WILL FAN AND MEDAL!

OpenStudy (anonymous):

OpenStudy (anonymous):

@bibby

OpenStudy (bibby):

question 3: the initial value is the y intercept the rate-of-change is the slope

OpenStudy (bibby):

same goes for question 2

OpenStudy (bibby):

now the slope intercept form looks like \(y=mx+b\) where m is the slope and b is the y-intercept

OpenStudy (anonymous):

whats \[mx\] then?

OpenStudy (bibby):

mx=m*x it's the slope times x

OpenStudy (anonymous):

Question3; Describe how you can use similar triangles to explain why the slope of the graph between points A and B is the same as the slope of the graph between points A and C.

OpenStudy (bibby):

not sure how to put this one to words. Shapes are similar if all their sides are in the same proportion. draw 2 triangles, find the lengths of the line segments, prove that CB=BA

OpenStudy (anonymous):

okay, and is the rate of channge for question 2, 30/1?

OpenStudy (bibby):

-30

OpenStudy (bibby):

the line's going down which means it has negative slope

OpenStudy (anonymous):

and what does this mean on question 2? Write an equation in slope-intercept form to model the relationship between x and y.

OpenStudy (bibby):

y=mx+b m=slope b=yintercept

OpenStudy (anonymous):

so i just have to write a new equation?

OpenStudy (bibby):

I don't know what you mean. you're supposed to represent the graph as an equation

OpenStudy (anonymous):

okayy, thank you

OpenStudy (bibby):

show me what you have written down

OpenStudy (bibby):

why can't you do b? the rate of change is the slope is m b is the initial value is the y-intercept they're the same thing

OpenStudy (bibby):

3b and 2a are correct

OpenStudy (bibby):

not sure what 3a means, sorry

OpenStudy (anonymous):

what is x? in 2b

OpenStudy (bibby):

nothing, have you never worked with linear equations? they look something like y=2x+3 or y=-7x+3

OpenStudy (anonymous):

i have, they just confuse me alot, and what do initial value and slope represent? i dont get that part

OpenStudy (bibby):

initial value = y intercept rate of change = slope

OpenStudy (bibby):

they're exchangeable

OpenStudy (bibby):

I think the word I was looking for is interchangeable

OpenStudy (bibby):

recall that slope/rate of change is y2-y1/x2-x1 (or the change in y over the change in x) so you can write it as the distance from the surface over the time it all looks good except 3a. it might be because I'm tired but I don' tget what you're trying to say

OpenStudy (anonymous):

that question made no sense so i answered with nonsense

OpenStudy (bibby):

LOL it makes a little bit of sense

OpenStudy (bibby):

WHOOPS. AB = AC slope

OpenStudy (anonymous):

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OpenStudy (bibby):

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OpenStudy (bibby):

you can then use proportions to prove similarity

OpenStudy (anonymous):

yeah i guess, but i already submitted the assignment because i cant spend too long on them or it'll shut off

OpenStudy (bibby):

oh, online school sounds fun

OpenStudy (anonymous):

not at allll! lol

OpenStudy (bibby):

I had a double curriculum in private school lmao I'll take online school any day. but virtual schools weren't really a thing when I was in high school

OpenStudy (anonymous):

Im not good with out human interaction all day everyday.. I dont learn from reading.

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