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3 years ago

Di ketahui f(x)=ax+b tentukan fungsi f(1)=3danf(2)=5

1 answer:

5 0

F(x) = ax + b
maka..
f(1) = 3
a(1) + b = 3 --> a+b = 3

f(2) = 5
a(2) + b = 5 --> 2a+b = 5

untuk mencari nilai a dan b nya, di eliminasi, maka dapat
a=2 dan b=1

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3 years ago

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Standard form: $2x - y = 4$

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Standard form: $x - 2y = 2$

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Standard form: $4x -5y = - 21$

Step-by-step explanation:

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where:

$y$ = y-coordinate
$m$ = slope
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$b$ = y-intercept

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$\textsf{1. as} \ m=2: \ \ y = 2x + b$

$\textsf{at} \ (6, 8): \ \ 8 = 2(6) + b$

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Standard form: $2x - y = 4$

$\textsf{2. as} \ \ m = \dfrac12: \ \ y = \dfrac12x + b$

$\textsf{at} \ (4, 1): \ \ 1 = \dfrac12(4) + b$

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Standard form: $x - 2y = 2$

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$\textsf{at} \ (1,5): \ \ 5 = \dfrac45(1) + b$

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2 years ago

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