Since we always want to have an a which equals 1 so then we don't have to do AC method, a longer process, we're going to want to take out the -1.
-1(x^2 - x - 42)
Then, we want to know what two number multiply to equal c (-42 here) and add up to equal b (-1 here). Those two numbers would be -7 and 6 since -7(6) = -42 and -7 + 6= -1.
So then from here we can just plop these numbers into (x+ __).
1(x-7)(x+6)
This is your final answer, A.
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Answer:
It's linear, so its proportional/has a relationship.
The y/x thing means slope, so take the slope -- which is 9.
Answer:
Image result for Three vertices of a rectangle are (6,1), (3,1), and (3,8). What are the coordinates of the fourth vertex?
One would be to divide the rectangle into two triangles, then use the Pythagorean Theorem to find the distances between the points, and finally use Heron's formula to find the areas of the two triangles.
To find the area of a triangle where you know the x and y coordinates of the three vertices, you'll need to use the coordinate geometry formula: area = the absolute value of Ax(By - Cy) + Bx(Cy - Ay) + Cx(Ay - By) divided by 2.
Step-by-step explanation:
