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- anonymous

Variable a is 4 more than variable b. Variable a is also 1 less than b. Which of the following pairs of equations best models the relationship between a and b?
a = b + 4
a = b − 1
a = 4b
a = b + 1
b = a + 4
b = a − 1
b = 4a
b = a + 1

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- anonymous

- jamiebookeater

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- johnweldon1993

So we have 'a' and 'b'
If 'a' is 4 more than 'b' ...that is just addition right? a = b + 4
And variable 'a' is 1 less than 'b' so a = b - 1

- anonymous

wait im confused lol, cause its two equations for each answer so im confused rn

- johnweldon1993

Right which is why we needed to work with them both
if A is 4 more than B...then B + 4 = A
*****************************************First equation we needed
and if A is 1 less than B...then B-1 = A
*****************************************Second equation we needed
So our answer choice with
\(\large a = b + 4\) and \(\large a = b - 1\) would be correct

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- anonymous

thank you so muchh

- johnweldon1993

Not a problem :) Enjoy your summer!

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