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Need help with math paper only one page

User Pedrofurla
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1 Answer

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16 votes

Proportional relation

The slope

The blue slope is negative and the green one is positive, if you realize it your slope has to be positive.

To calculate the slope (m)

y = m x +b

m = (y2-y1)/ (x2-x1)

____________________

You can take two points from the graph for example

Points (x, y)

Point 1 (0, 0); x1= 0 ; y1= 0

point 2 (300, 450); x2= 300 ; y2= 450

m = (450 - 0)/ (300 - 0)

m = 45/ 30

m = 3/2

_____________________

The equation that represents the graph

y= 3/2 x

________________________________

Table

Grams of fish (x); the number of calories (y)

y= 3/2 x

x= 300 Grams of fish

y= 3/2 (300)

y= 450

450 calories

______________

x= 1

y= 3/2 (1)

y= 3/2 = 1.5

1.5 calories

_____________

x= 1000

y= 3/2 (1000)

y= 3000/2 = 1500

1500 calories

_______________________

y = 2001 calories

y= 3/2 x

2001 = 3/2 x

x= 2001 *2/3

x= 1334

1334 grams of fish

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User Udy
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