The question is on the screenshot, thanks

Mathematics

2 answers:

NeTakaya3 years ago

8 0

Answer

It is B because Q rotate with 180 degree so if it rotates again with 180 degree it ends on point B

Step-by-step explanation:

timofeeve [1]3 years ago

5 0

Answer:

Point B

Step-by-step explanation:

A 180 degree turn means that the point practically reflects over the y-axis. The number of spaces away from (0,0) that Point Q was originally is the number of spaces that Point Q will still be from (0,0). Point Q, like already said, will just be on the other side of the y-axis. Point Q's original coordinates were (0,-4), which means that point Q was originally 4 units away from (0,0) on the x-axis on the left side of the y-axis. That means with a 180 degree transformation, Point Q will be still 4 units away from (0,0) on the x-axis, but on the right side of the y-axis. The new coordinate pair for Point Q would be (0,4), which is also where Point B is plotted on the graph. Therefore, Point B would be the new image of Point Q.

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Solve the System by Graphing:

Marat540 [252]

Answer:

B) One solution
The solution is (2, -2)
The graph is below.

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Explanation:

I used GeoGebra to graph the two lines. Desmos is another free tool you can use. There are other graphing calculators out there to choose from as well.

Once you have the two lines graphed, notice that they cross at (2, -2) which is where the solution is located. This point is on both lines, so it satisfies both equations simultaneously. There's only one such intersection point, so there's only one solution.

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To graph these equations by hand, plug in various x values to find corresponding y values. For instance, if you plugged in x = 0 into the first equation, then,

y = (-3/2)x+1

y = (-3/2)*0+1

y = 1

The point (0,1) is on the first line. The point (2,-2) is also on this line. Draw a straight line through the two points to finish that equation. The other equation is handled in a similar fashion.