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andreyandreev [35.5K]
1 year ago
15

Reflection across y = -x please I need help I will mark you brainless

Mathematics
1 answer:
tresset_1 [31]1 year ago
4 0
Answer is
U= (-2,2)
V=(-2,4)
W= (-4,3)

Step by step
Find points for the triangle.
Using the rule for reflection across y axis.

The rule for a reflection over the y -axis is (x,y)→(−x,y)

U (2,2) ➡️ (-2,2)

V (2,4) ➡️ (-2,4)

W (4,3) ➡️ (-4,3)

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If the angle is in standard position and P(x, y) is a point on the terminal side of , and r is the distance from the origin to P
Ghella [55]

Answer:

x^2 + y^2 = r^2

Step-by-step explanation:

See image. "An angle in standard position" means the vertex (point part) of the angle is at the origin (0,0). And one side of the angle is glued onto the x-axis. The other side of the angle is free to rotate around the axis. That's the terminal side. Then there's a point P (x,y) on that side. See image. And r is labelled there. This set up makes a right triangle. So I put Pythagorean theorem as the answer here, but honestly if you are learning any right triangle theorems or trigonometry, you could use this set up. The leg that lays along the x-axis is x units long and the other leg is y units long. The hypotenuse is r units long.

8 0
2 years ago
What is the equation of the line that passes through the point ( − 4 , 8 )and has a slope of − 1/4
JulsSmile [24]

Answer:

y = -1/4x + 7

Step-by-step explanation:

Plug in the point and slope into y = mx + b, and solve for b:

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8 = -1/4(-4) + b

8 = 1 + b

7 = b

Plug in the slope and b into y = mx + b:

y = mx + b

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So, the equation of the line is y = -1/4x + 7

8 0
3 years ago
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5 0
3 years ago
Read 2 more answers
Make t the subject of k= t-e/2
Sophie [7]

Answer:

t=k+\frac{e}{2}

Step-by-step explanation:

k=t-\frac{e}{2}\\t=k+\frac{e}{2}

5 0
2 years ago
What is the sum of (–2.1x + 3.7) and (5 + 4.9x)?
vesna_86 [32]

It's easier to work with problems such as –2.1x + 3.7 -5 + 4.9x when we rearrange the like terms vertically:


–2.1x + 3.7 -5 + 4.9x


becomes


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+4.9x -5

------------------

2.8x - 1.3 (answer)


4 0
3 years ago
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