I'm a general math idiot

[themadpoker]

Anyone on my f-list good at math? Working on my homework and I have no clue how to graph inequalities (when it's like y>6+x). *_* I should've asked for more explanation when I was in class.

Comments

[troisroyaumes]

Graph it as an equation first, then shade in the part above or below the curve. E.g. for y > 6 + x, you graph the line y = 6 + x and then shade the region above the line (above because it's greater than; you would shade below if it was y < 6 + x).

[troisroyaumes]

Oh, and I should add that the standard is that if it's just "greater than" then you draw the boundary as a dotted line, while if it's "greater than or equal to" then you draw the boundary as a solid line.

[themadpoker.livejournal.com]

But since I don't know x does that mean I should just put the y-intercept as 6? That's the part that confused me.

[troisroyaumes]

Yup! The standard way to graph a line, given the equation y = mx + b (where the values of m and b are given) is that the slope of the line is m and the y-intercept is b. In the case of y = 6 + x, m = 1 and b = 6.

[themadpoker.livejournal.com]

Thank you! :)

[troisroyaumes]

Glad to help! ^_^