Question

Does any one know how to read these linear graphs ??Picture below

Answer 1

FIrst find the equation of the dashed line that forms the boundry between the shaded and the non shaded region. (y= -7/3*x + 7)..
Because it is dashed that means our equation doesn't include the line itself, therefore we will have an inequality < or > instead of <= or >= (these would be used for a solid line).
To determin if we use < or > we look to see if the y values of the shaded region are above or below the line.. if above y > -7/3*x+7.... however the shaded region is below so we have::
y < -7/3*x+7

And of course plug in some points, (in the shaded region, on the line, and not in the shaded region) to make sure everything checks out.

Answer 2

thanks hun