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
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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 :/
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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.
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