Mathematics
21 Online
iYuko (iyuko):
HELP HELP HELP!
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OpenStudy (anonymous):
Iggy
iYuko (iyuko):
@iGreen
iYuko (iyuko):
@ganeshie8
iYuko (iyuko):
@TheSmartOne
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iYuko (iyuko):
@YanaSidlinskiy
OpenStudy (igreen):
Rate of Change = Slope
iYuko (iyuko):
Ohhhhhh
OpenStudy (igreen):
6x - 3y = 12
Solve for 'y', do you know how?
iYuko (iyuko):
No
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OpenStudy (igreen):
Okay, first, subtract 6x to both sides, do you know how?
iYuko (iyuko):
Yea
OpenStudy (igreen):
Okay, tell me what you get
iYuko (iyuko):
-3y=12-6x
OpenStudy (igreen):
Yes, now divide -3 to both sides
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iYuko (iyuko):
y=-4+2
iYuko (iyuko):
y=-2?
OpenStudy (igreen):
That's 2x..
OpenStudy (igreen):
y = -4 + 2x
or
y = 2x - 4
OpenStudy (igreen):
Now it's in the form of y = mx + b, where 'm' is the slope..so what's the slope here?
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iYuko (iyuko):
-4
iYuko (iyuko):
It's 2
OpenStudy (igreen):
Check again..it's y = 2x - 4
OpenStudy (igreen):
Yes, now move onto the next one.
OpenStudy (igreen):
y = 5x + 4
That's already in slope-intercept form, so what's the slope?
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iYuko (iyuko):
So 2 is high or low?. 5
OpenStudy (igreen):
5 is correct.
It's asking for the biggest slope.
#1 has a slope of 2
#2 has a slope of 5
So far #2 is the biggest.
OpenStudy (igreen):
Now for C, take any two points and plug them into the slope formula.
iYuko (iyuko):
3
OpenStudy (igreen):
Let's take (1, 2) and (3, 8).
\(\sf m = \dfrac{y_2-y_1}{x_2-x_1}\)
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OpenStudy (igreen):
3 is correct.
OpenStudy (igreen):
Now take any two points for the graph for D to find the slope
iYuko (iyuko):
D is 4
iYuko (iyuko):
So B?
OpenStudy (igreen):
Yep, you got it..B is correct.
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iYuko (iyuko):
Thank you.