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If y(x)=4x what is x when y(x)=4?1. 12. 43. 24. 0

User Karrin
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1 Answer

16 votes
16 votes

1. 1

Step-by-step explanation

to find the value of x , when y= 4, just replace and isolate x


f(x)=y

it means the value of y depends of the value for x


y=4x

y=4x, means that the value for y is 4 times the value for x

when y=4


\begin{gathered} y=4x \\ 4=4x \\ \text{divide both sides by 4} \\ (4)/(4)=(4x)/(4) \\ 1=x \\ x=1 \end{gathered}

it means you need input 1 in x to obtain 4 in y

User Gautam Sharma
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