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igor_vitrenko [27]
3 years ago
12

A point with a positive x-coordinate and a negative y-coordinate is reflected over the y-axis.

Mathematics
2 answers:
icang [17]3 years ago
6 0

Answer:

The x-coordinate is negative, and the y-coordinate is negative.

Step-by-step explanation:

(x, -y)

When you reflect over the y-axis, the x-coordinate becomes negative:

(-x, -y)

goblinko [34]3 years ago
3 0
We need a photo or something
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180°

Step-by-step explanation:

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Prove that DJKL~ DJMN using SAS Similarity Theorem. Plot the points J (1,1), K(2,3), L(4,1) and J (1,1), M(3,5), N(7,1). Draw DJ
dolphi86 [110]

Answer and Step-by-step explanation: The triangles are plotted and shown in the attachment.

SAS Similarity Theorem is by definition: if two sides in one triangle are proportional to two sides of another triangle and the angles formed by those sides in each triangle is congruent, the triangles are similar.

For the triangles on the grid, we know that ΔJKL and ΔJMN have a congruent angle in J as shown in the image. To prove they are similar, we find the slope of sides KL and MN:

<u>Slope of KL</u>:

slope = \frac{y_{K} - y_{L}  }{x_{K} - x_{L} }

slope = \frac{3-1}{2-4}

slope = -1

<u>Slope of MN</u>:

slope = \frac{y_{N} - y_{M}  }{x_{N} - x_{M} }

slope = \frac{1-5}{7-3}

slope = -1

Since the slopes of KL and MN are the <u>same</u> and the angle is <u>congruent</u>, we can conclude that ΔJKL~ΔJMN.

5 0
2 years ago
Original price: $105; markdown:75
Marina86 [1]
105 - 75 = 30 That should do it.
6 0
3 years ago
What is the value of the expression 4x+y when x = 2 and y = 4?
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for 2y-x = 2*4 - 2 = 8 - 2 = 6
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3 years ago
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