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The table shows the cost y (in dollars) of x pounds of sunflower seeds.

Write a linear function that represents the cost of y of x pounds of seeds.Interpret the slope.

Pounds,x Cost,y
2 2.80
3 4.20
4 5.60
 Feb 27, 2014
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Cynthia:

The table shows the cost y (in dollars) of x pounds of sunflower seeds.

Write a linear function that represents the cost of y of x pounds of seeds.Interpret the slope.

Pounds,x Cost,y
2 2.80
3 4.20
4 5.60



Look at the pattern
x goes up by ones
y is going up by 1.40
Also 2*1.40 = 2.80

AlsoAnother hint is the word 'linear' is used in the question. linear graphs are straight line graphs and their equations are y=mx+b

therefore
y = 1.40x dollars
 Feb 28, 2014

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