If P1 has coordinates (x1, y1) and P2 has coordinates (x2, y2), then the distance between the two points is given by [(x1 - x2)2 + (y1 - y2)2]½ or [(x2 - x1)2 + (y2 - y1)2]½ Using the same two points as above, the midpoint formula is M = [(x1 + x2)/2], [(y1 + y2)/2] If we wanted to find the slope of the line on which the two points lie, it would be given by: m = (y1 - y2)/(x1 - x2) or (y2 - y1)/(x2 - x1) Some quadratic equations can be easily factored, some cannot. For those cases we use the Quadratic Formula: If ax2 + bx + c = 0 then x = [-b ± (b2 - 4ac)½]/2a Notice that the Distance, Midpoint and Slope Formulas all refer to linear equations. The quadratic formula, as the name implies, is used to find roots of an equation in which the variable x is squared.
Answer= - 3/25
-0.12=-12/100
-12/100 or simplified to -3/25
Answer: Option B.
Step-by-step explanation:
You need to remember that the y-coordinate of the midpoint is the average of the y-coordinate of the two points:
Given the endpoints (0,0) and (0,15) of the line segment, you can identify that the y-coordinate of each one are:
Then, when you substitute them into , you get:
Then, the method that you could use to calculate the y-coordinate of the midpoint of this vertical line segment is:
Divide 15 by 2.
Answer:
D!
Step-by-step explanation:
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