Question

помогите пожалуйста​

Answer 1

а)

при х = -2

$y = 2 \times ( - 2) - 1$

$y = - 4 - 1$

$y = - 5$
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при х = 0

$y = 2 \times 0 - 1$

$y = 0 - 1$

$y = - 1$
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при х = 13

$y = 2 \times 13 - 1$

$y = 26 - 1$

$y = 25$
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б)

при у = -5

$- 5 = 2x - 1$

$- 2x = - 1 + 5$

$- 2x = 4$

$x = 4 \div ( - 2)$

$x = - 2$
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при у = 0

$0 = 2x - 1$

$- 2x = - 1 - 0$

$- 2x = - 1$

$x = - 1 \div ( - 2)$

$x = - 0.5$
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при у = 19

$19 = 2x - 1$

$- 2x = - 1 - 19$

$- 2x = - 20$

$x = - 20 \div ( - 2)$

$x = 10$