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Yuri [45]
3 years ago
8

Y=-2-4x slope intercept form

Mathematics
1 answer:
Alinara [238K]3 years ago
3 0
Y=-2+-4x m=slope b=y-intercept
m=-4
b=-2
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An airline charges one fee for small luggage bags, and a larger fee for large luggage bags. One family checks five small bags an
RUDIKE [14]
X=small bag
y=large bag

5x+3y=260
4x+2y=200

(5x+3y=260)*4 =20x+12y=1040
(4x+2y=200)*5 =20x+10y=1000

subtract two equations: 2y=40
divide:                           y=20
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See attached

Step-by-step explanation:

When there is a lot of repetitive calculation to do, I like to let a spreadsheet or graphing calculator do it. The attached shows a spreadsheet that computes all the values you're asked to find.

For a linear equation in standard form, ax +by = c

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  y = (slope)·x + (y-intercept)

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<em>Note on spreadsheet formulas</em>

When you put the formulas into the spreadsheet, make sure to fix the column number or row number of the values you're computing, as appropriate. For example, the y-values in the different columns always use the slope from the slope column (fixed), the y-intercept from that column (fixed), and the x-value from the top row (fixed). If you make the cell references relative instead of fixed, you will get wrong answers.

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