Kuiz dulu^^[tex] \: [/tex]Diketahui rumus fungsi f(x) = 3x + 4. Jika nilai f(a) = 13, maka nilai a a.... Question from @azrella

HayabusaBrainly01

Jawaban:

Penjelasan dengan langkah-langkah:

f(x) = 3x + 4

f(a) = 13

13 = 3a + 4

13 - 4 = 3a

9 = 3a

a = 3

2 votes Thanks 3

Gusti2601

$\mathbb \color{aqua} \underbrace{JAWABAN}$

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$\mathbb \color{orange} \underbrace{PENYELESAIAN}$

$\underline{ \overline{ \boxed{ \bold{diketahui}}}}$

f(x) = 3x + 4
f(a) = 13

$\\ \underline{ \overline{ \boxed{ \bold{ditanya}}}}$

nilai a

$\\ \underline{ \overline{ \boxed{ \bold{jawab}}}}$

$\sf 3a + 4 = 13~~~~~~~~~~~~~~ \\ \sf 3a = 13 - 4 \\ \sf 3a = 9~~~~~~~~~ \\ \sf a = \frac{9}{3} ~~~~~~ \\ \sf a = \bold3~~~~~~~$

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$\mathbb \color{violet} \underbrace{PEMBUKTIAN}$

=> substitusikan a = 3 :

$\sf3a + 4 = 13~~~~~~~~ \\ \sf3(3) + 4 = 13~~~~~~~~~~~ \\ \sf9 + 4 = 13~~~~~~ \\ \sf13 = 13~$

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$\mathbb \color{red} \underbrace{KESIMPULAN}$

Jadi, nilai a adalah 3

$\colorbox{ff0000}{} \colorbox{ff4000}{}\colorbox{ff8000}{}\colorbox{ffc000}{}\colorbox{ffff00}{}\colorbox{c0ff00}{}\colorbox{80ff00}{}\colorbox{40ff00}{}\colorbox{00ff00}{}\colorbox{00ff40}{}\colorbox{00ff80}{}\colorbox{00ffc0}{}\colorbox{00ffff}{}\colorbox{00c0ff}{}\colorbox{0080ff}{}\colorbox{0040ff}{}\colorbox{0000ff}{}\colorbox{4000ff}{}\colorbox{8000ff}{}\colorbox{c000ff}{}\colorbox{ff00ff}{}\colorbox{ff00c0}{}\colorbox{ff00a0}{}\colorbox{ff0080}{}\colorbox{ff0040}{}$

2 votes Thanks 2

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