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shaw2708
16.12.2019 •
Mathematics
Point q is plotted on the coordinate grid. point p is at (40, −20). point r is vertically above point q. it is at the same distance from point q as point p is from point q. which of these shows the coordinates of point r and its distance from point q?
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Ответ:
Step-by-step explanation:
Distance between points in![R^2](/tpl/images/0421/0591/2391d.png)
If P(p1,p2) and Q(q1,q2) are points on the plane
, the distance between them is
We have Q(-10,-20) plotted on the coordinate grid. We also know that P is at (40, -20). We can see they have the same y-coordinate, so the distance between them is computed simply by subtracting their x-coordinates
We must locate R knowing it's vertically above Q (x-coordinate = -10) and at the same distance from point Q as point P is from point Q. That means that from R to Q there are 50 units. They-coordinate of R will be -20+50=30.
The point R is located at (-10,30)
The distance from R to P is
Ответ: