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Algebra 18 Online
OpenStudy (anonymous):

Which of the following expressions is the inverse of the function y equals quantity x plus 5 divided by 7? y equals quantity x plus 7 divided by 5 y equals quantity x minus 5 divided by 7 y = 5x − 7 y = 7x − 5

OpenStudy (anonymous):

@vocaloidd @kingbruh

OpenStudy (anonymous):

someone help nd explain

OpenStudy (anonymous):

what do you mean by y equals quantity x plus 7 divided by 5

OpenStudy (campbell_st):

so the equation is \[y = \frac{x +5}{7}\] so to find the inverse, swap x and y... so it becomes \[x = \frac{y + 5}{7}\] now make y the subject of the equation

OpenStudy (anonymous):

i dont get it :/

OpenStudy (campbell_st):

the final result will be the inverse of the original equation

OpenStudy (campbell_st):

ok... good luck then

OpenStudy (campbell_st):

but your goal is to get y on its own... so start by multiplying both sides of the equation by 7

OpenStudy (anonymous):

so its B

OpenStudy (campbell_st):

if that's what you think, then select it.

OpenStudy (campbell_st):

but it's a bad choice

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