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Jet001 [13]
3 years ago
12

Jorge needs to reflect a figure across the line y= -4 Which statements are correct regarding steps he could take to complete the

reflection? Check all that apply. Jorge should graph in the vertical line with values of –4 for the line of reflection. Jorge could count how far each pre-image point is from the line of reflection along the perpendicular from the point to the line of reflection. Jorge could count how far each vertex of the figure is from the y-axis and count the same distance on the other side. Jorge will not move any point that lies on the line of reflection. Jorge could check his work by seeing if each segment joining a pre-image point with its image has the midpoint on the line of reflection. Jorge could check his work by making sure that the image has the same orientation as the original.
Mathematics
2 answers:
Serjik [45]3 years ago
8 0

Answer:

see below. × signifies a wrong choice; → signifies a correct one

Step-by-step explanation:

× Jorge should graph in the vertical line with values of –4 for the line of reflection. (The line of reflection is horizontal.)

→ Jorge could count how far each pre-image point is from the line of reflection along the perpendicular from the point to the line of reflection.

× Jorge could count how far each vertex of the figure is from the y-axis and count the same distance on the other side. (He could do this pointless exercise, but it has no relation to the problem. The y-axis (x=0) is not the line of reflection.)

→ Jorge will not move any point that lies on the line of reflection. (All points on the line of reflection are reflected to themselves.)

→ Jorge could check his work by seeing if each segment joining a pre-image point with its image has the midpoint on the line of reflection. (This is what is meant by "line of reflection.")

× Jorge could check his work by making sure that the image has the same orientation as the original. (A reflected image as an orientation opposite that of the original, a fact you see every time you look in a mirror.)

Georgia [21]3 years ago
6 0

Answer:

B D E

Step-by-step explanation:

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Roy is in a hot air balloon that has just taken off and is floating above its launching point.
leonid [27]

Answer:

7.1 meters

Step-by-step explanation:

Use the pythagorean theory:

10 would be the hypotenuse

7 would be one of the legs

and x (or whatever variable you'd like) would be the other leg.

7^2+x^2=10^2

49+x^2=100

subtract 49 from both sides

x^2=51

take the square root on both sides

x is approximately 7.1

6 0
3 years ago
\frac{1}{5}k-9=\frac{3}{5}k-7
Oksi-84 [34.3K]

let start by multiplying both sides by the LCD of all denominators, in this case that'd be 5, to do away with the denominators.


\bf \cfrac{1}{5}k-9=\cfrac{3}{5}k-7\implies \stackrel{\textit{multiplying by }\stackrel{LCD}{5}}{5\left( \cfrac{1}{5}k-9 \right)=5\left( \cfrac{3}{5}k-7 \right)}\implies k-45=3k-35 \\\\\\ -45=2k-35\implies -10=2k\implies \cfrac{-10}{2}=k\implies -5=k

6 0
3 years ago
A graph is drawn (see picture). Explain how you know that y is not directly proportional to x.
serious [3.7K]

It's not, because it doesn't go through the origin (0,0)

6 0
4 years ago
Read 2 more answers
4. What is the measure of each interior angle of a regular 28-gon?
melomori [17]

Step-by-step explanation:

Measure of each interior angle of 28 sided polygon

\frac{(28 - 2) \times 180 \degree}{28}  \\   \\  =  \frac{26 \times 180 \degree  }{28}  \\  \\ =  \frac{4680 \degree  }{28}  \\  \\  = 167.14\degree \\

8 0
3 years ago
Find f(-2) for the function:<br><br> f(x)= 3x^2-1, x&lt;1<br> x+2, x&gt; 1
azamat
F(x) = 3x² - 1
f(-2) = 3(-2)² - 1
f(-2) = 3(4) - 1
f(-2) = 12 - 1
f(-2) = 11

f(x) = x < 1
f(-2) = -2 < 1

f(x) = x + 2
f(-2) = -2 + 2
f(-2) = 0

f(x) = x > 1
f(-2) = -2 > 1
f(-2) = -2 < 1
8 0
3 years ago
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