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Mathematics 18 Online
OpenStudy (anonymous):

The graph represents function 1, and the equation represents function 2: Function 2 y = 2x + 7 How much more is the rate of change of function 1 than the rate of change of function 2? (4 points) 2 4 3 1

OpenStudy (anonymous):

OpenStudy (anonymous):

@bibby

OpenStudy (bibby):

what's the rate of change of a straight horizontal line?

OpenStudy (anonymous):

idk the graph is up there

OpenStudy (bibby):

I already know the answer lol

OpenStudy (anonymous):

oh lol

OpenStudy (anonymous):

LOL im dumb! lol

OpenStudy (anonymous):

ummmm idk?

OpenStudy (anonymous):

llloooool

OpenStudy (bibby):

what's so funny buddy

OpenStudy (anonymous):

idk

OpenStudy (bibby):

the slope of a horizontal line is always 0. use the slope formula to confirm. let's take 2 random points on the line (3,6) and (5,6). if you notice as we increase x, the y's dont chaneg \(m=\frac{y_2-y_1}{x_2-x_1}=\frac{6-6}{5-3}=\frac{0}{2}=0\)

OpenStudy (anonymous):

im still confused

OpenStudy (bibby):

find the rate of change of the 2nd equation and compare it to the rate of change of the horizontal line (0)

OpenStudy (anonymous):

hhhhhhhmmmmmmmmmmmmmmmmm

OpenStudy (bibby):

what's the slope of y=2x+7

OpenStudy (anonymous):

3.5

OpenStudy (bibby):

how'd you get that

OpenStudy (anonymous):

idk lol i guessed because 3.5x2?

OpenStudy (bibby):

that's the weirdest thing I've ever seen lol

OpenStudy (bibby):

lines of the form y=mx+b have a slope of m for example y=2x has a slope of 2 y=3x+6 has a slope of 3 y=-5x-22 has a slope of -5

OpenStudy (anonymous):

oh so 5

OpenStudy (bibby):

y = 2x + 7

OpenStudy (anonymous):

9!

OpenStudy (bibby):

http://puu.sh/d0gV7.png

OpenStudy (bibby):

http://puu.sh/d0h0t.png

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