Question

Identify the form of the equation –3x – y = –2. To graph the equation, would you use the given form or change to another form? Explain.



I know I should change it to Y = -3x + 2 but I don't why ?
The question is asking me to explain but I don't have no words to say

Please help

Answer 1

you would want to change it to slope intercept form which is y = -3x + 2
putting it in the form you can quickly see that 2 is the y-intercept, which is where it crosses the y axis when the x value is 0.  You can also see than your slope is negative so your line will be going down.  Also, you can tell the slope of the line (rise over run)