How do you graph y > 6x+5y>6x+5 and y< -6x+7y<6x+7?

1 Answer
Aug 4, 2015

Determine the areas represented by each inequality and then select only the area covered by both selections

Explanation:

color(red)("For " y > 6x - 5)For y>6x5
color(white)("XXXX")XXXXIdentify 2 points on the corresponding equality equation
color(white)("XXXX")XXXXcolor(white)("XXXX")XXXXI used (x=0 rarr y=-5x=0y=5) and (x=2 rarr y=-5x=2y=5)

color(white)("XXXX")XXXXDraw the line through these two points (noting that in this case the line is not to be included) and select the side corresponding to the inequality.
color(white)("XXXX")XXXXcolor(white)("XXXX")XXXXOne way to do this is to test if (0,0)(0,0) is in the included or excluded area.

color(blue)("For " y < -6x + 7)For y<6x+7
color(white)("XXXX")XXXXRepeat the above process

color(green)("Select area common to both")Select area common to both
color(white)("XXXX")XXXX(see image below)
enter image source here