Question

Which coordinate plane shows the graph of 3x +y> 9?

Answer 1

Explanation:

First we have to turn this from standard form to slope-intercept form.

We'll subtract 3x on both sides to get:

`y > - 3x + 9`

Now in order to graph this inequality, you must know that:

• 9 is the y-intercept (the point where the line crosses the y-axis), and -3 is the slope because it goes down 3 units and to the right 1 unit.
• The shaded area will be above the line since y is greater.
• The line will be negative and have a negative slope.
• The line will be dotted since the sign is greater-than, not greater-than-or-equal-to.

(The line will be graphed above for your convenience⤴⤴⤴)

Hope this helps :)