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Mathematics and Statistics Assessment Videos 200 videos

TSI Math: Understanding Points of Intersection
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Two parabolas are graphed in the coordinate plane. Parabola A is a function, and parabola B is not a function. What is the maximum number of points...

TSI Math: Solving a Quadratic Equation for x
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What is x for the equation 2x² + 36 = -18x?

TSI Math: Finding a Line's x-Intercept Given a Point on that Line
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Which of the following points is a location where the function f(x) = -2x² + 12x + 54 crosses the horizontal axis?

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TSI Math: Identifying a Rotated Shape on a Graph 3 Views


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Description:

Rotating the above figure 90° clockwise about the point (2, -5) results in which of the following?


Transcript

00:02

All right sy mash bumpers Next up here we go

00:04

rotating the figure Ninety degrees clockwise about the point to

00:10

negative five So that's a point right here Results in

00:15

which of the following All right so we're going to

00:20

rotate it clockwise The clock goes tick tick tick this

00:24

direction for all you digital clock snobs out there That's

00:27

what clockwise means it's trickier to rotate the whole shape

00:30

around to negative five So we'll rotate individual points within

00:35

the shape Instead you start with the top point of

00:37

the hexagon Draw a line segment from the top point

00:40

two two negative five like that And then count the

00:42

horizontal and vertical change between the two points a ziff

00:45

were you know finding a slope Excellent We move nine

00:48

units right and three units down Well to rotate the

00:51

point ninety degrees clockwise started to negative five and then

00:55

count up nine units and three units Right Follow the

00:59

same process with other points on the hexagon until we

01:02

have enough information to connect the rotated points and complete

01:05

the hex a gun and well more or less that's

01:07

what it looks like Yeah yeah we know they could

01:09

have written the directions clear here We didn't write these

01:11

things some alright anyway Pretty rainbow colors and that's it

01:15

that's what it should look like So the answer is 00:01:17.659 --> [endTime] b we show up We graft or done

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