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December 17, 2014

December 17, 2014

Posted by **chica** on Wednesday, November 18, 2009 at 10:01pm.

- algebra -
**Reiny**, Wednesday, November 18, 2009 at 10:12pmAssuming that the learning of vocabulary words increases in a linear pattern, (it does not), you have two ordered pairs.

(5,20) and (10,40)

Just like you would in grade 9 geometry, find the slope, then use y = mx + b to find the equation.

- algebra -
**Kanon**, Wednesday, November 18, 2009 at 10:21pmHello,

Did you try to answer yourself ?

x = number of lessons

y = number of vocabulary words

I help you : 5x = 20y ( 5th French lesson, you have learned 20 vocabulary words )

It's math

Good luck :)

- Kanon, that is wrong. algebra -
**Reiny**, Wednesday, November 18, 2009 at 10:54pmslope = (40-20)/(10-5) = 4

so y = mx + b becomes

y = 4x + b

sub in (5,20)

20 = 4(5) + b

b = 0

so y = 4x is the equation.

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