1. Construa os gráficos para cada uma das funções: a) \( f(x)=4 x+2 \) b) \( f(x)=2 x-1 \) c) \( f(x)=-x+2 \)

considère les matrices suivantes de \( \mathcal{M}_{3}(\mathrm{R}): \mathrm{M}=\left(\begin{array}{lll}0 & 1 & 1 \\ 1 & 0 & 1 \\ 1 & 1 & 0\end{array}\right) \) et \( \mathrm{J}=\mathrm{M}+\mathrm{I}_{3} \). Calculer \( J^{2}, J^{3} \) (On admettra dans la suite que \( \left.\forall k \in \mathrm{~N}^{*}, J^{k}=3^{k-1} J\right) \) En remarquant que \( \mathrm{M}=\mathrm{J}-\mathrm{I}_{3} \), démontrer que, pour tout \( \mathrm{n} \in \mathrm{N}, \mathrm{M}^{\mathrm{n}}=(-1)^{\mathrm{n}} \mathrm{I}_{3}+\frac{1}{3}\left(2^{\mathrm{n}}-(-1)^{\mathrm{n}}\right) \mathrm{J} \).

Collect like terms and then arrange them in descending order. \( 3 x+2 x+2 x-x^{2}-2 x^{2} \)

Oppgave \( 9(1+1+2+2 \) poe Los likningene. a) \( \quad x-10=10 \)

a) \( 4 x+y=2 \) b) \( 4 x+2 x-2 y=3+1 \)

b) \( x-10=2 x+4 \quad \) Svan