Question

5y-4>или равно 6
4-y< или равно 3
Это система

Answer 1

{5y-4≥6
{4-y≤3

{5y≥6+4
{-y≤3-4

{5y≥10
{-y≤-1

{y≥2
{y≥1
                               \\\\\\\\\\\\\\\\\\\\\\\\\
----------- 1 ----------- 2 -----------------
               \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\
у≥2 или у∈[2; +∞)

Answer 2

$5y-4 \geq 6$
$4-y \leq 3$

$5y \geq 10$
$- y \leq - 1$

$y \geq 2$
$y \geq 1$
Ответ [2; = ∞)