2x² – xy - 15y2 How to factor by grouping
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Answer:
Step-by-step explanation:
Use the zero-interval test [test point (0, 0)] to verify them as false or true, and to determine whether we shade the shared opposite portions [a shared portion that does NOT contain the origin] or the shared portions that DO contain the origin:
So, this system will be shaded in a shared opposite portion.
*NOTE; Both inequalities have an identical y-intercept of so both inequalities must intersect the y-axis at
and since there are already lines labeled as <em>dashed</em><em> </em>and solid, we do not have to worry about it in this case.
** None of the other graphs match this, so the bottom right graph has to be it, considering it cut off.
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