Step-by-step explanation:
<u>Step 1:  Solve using the first point</u>
<em>(2, 28)</em>


<u>Step 2:  Solve using the second point</u>
<em>(-1, -5)</em>


<u>Step 3:  Solve using the third point</u>
<em>(4, 220)</em>


<u>Step 4:  Solve using the fourth point</u>
<em>(-2, -20)</em>


<u>Step 5:  Combine the first and fourth equations</u>
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<u>Step 6:  Solve for c in the second equation</u>



<u>Step 7:  Substitute d with the stuff we got in step 5</u>



<u>Step 8:  Substitute d and c into the first equation</u>
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<u>Step 9:  Substitute a, b, and c into the third equation</u>





<u>Step 10:  Find a using b = 2</u>



<u>Step 11:  Find c using a = 3 and b = 2</u>




<u>Step 12:  Find d using b = 2</u>




Answer:  