Answer:
[tex]y \geqslant \frac{1}{4} x - 1[/tex]
[tex]4 \times y \geqslant \frac{1}{4} \times 4x - 4 \times 1[/tex]
[tex]4y \geqslant x - 4[/tex]
[tex]4y + x \geqslant - 4[/tex]
[tex]5yx \geqslant - 4[/tex]
[tex]yx \geqslant - 4 - 5[/tex]
[tex]yx \geqslant - 9[/tex]
you're welcome I think I don't really know whether I'm finding x or y or yx
