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sasho [114]
3 years ago
12

Write the linear equation that gives the rule for this table.

Mathematics
1 answer:
Zinaida [17]3 years ago
3 0

Answer:

f(x) = -7x + 1

Step-by-step explanation:

Slope intercept form is

y = mx + b

m is slope

b is y-intercept

--------------------------

y decreases by 7 for each increase of 1 in x

slope = -7

to find "b" plug in one of the points and m = -7

using point (3, -20)

y = mx + b

-20 = -7(3) + b

-20 = -21 + b

b = 1

The equation is

f(x) = -7x + 1

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Answer:

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8x + 2y = 44
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Since 2y is already common, there is no need for multiplication. Just reverse the signs on the equation.

Like this; 

8x + 2y = 44
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All the additions become subtractions and vice versa.

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Explaining the error for #9b is simply doing the whole sum. 

Hope this helped! :) I tried my best to explain. 

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Answer:

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