Answer:
Hello!!! Princess Sakura here ^^
Step-by-step explanation:
So since you are too lazy I assume that you already know what to do and you just don't want to do it so I don't think you'll need any explaining right?
X: -5 -1 0 1
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Y: -32 -8 -2 4
Actually the formula for the area of a triangle is A = 1/2bh.
First step: multiply both sides by 2, to get rid of the 1/2.
2A = bh
Now divide both sides by b.
2A/b = h or h = 2A/b
We can write out a formula in order to solve this. Since sum represents addition, if x represents the unknown number, we can write the formula: x+51=-21. Then, to solve for x, you would subtract 51 from both sides to get x=-72 which is the final answer.
