is 5x + 2y = 8 look like horizontal, vertical, slanted right upwards,slanted right downwards?

Slope-Intercept Form:

5 x + 2 y = 8 Subtract 5 x to both sides

5 x + 2 y - 5 x = 8 - 5 x

2 y = - 5 x + 8 Divide both sides by 2

y = - 5 x / 2 + 4

For graph :

In google type:

functions graphs online

When you see list of results click on:

rechneronline.de/function-graphs/

When page be open in blue recatacangle type:

- 5 x / 2 + 4

and click option : Draw

you will see graph