1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
faltersainse [42]
3 years ago
7

Use matrices to determine the vertices of the reflected figure. Then graph the image and the pre-image on the same coordinate gr

id.
Triangle XYZ with vertices X(2, -9), Y(-6, 0) and Z(-5, -5), reflected over the y-axis.
A.
B.
C.
D.
(pictures below)

Mathematics
1 answer:
Amanda [17]3 years ago
3 0

Answer:

  • see below for the matrix multiplication
  • graph C

Step-by-step explanation:

Reflection across the y-axis is a left-right reflection that changes only the sign of the x-coordinate. The transformation matrix (as for any rotation and/or reflection) can be 2-dimensional, and can left-multiply the coordinate matrix that has coordinate pairs as column vectors. The transformed coordinates show up as column vectors in the result matrix.

The only graphs showing left-right reflections are those of choices C and D. Only choice C has the points properly plotted on the graph.

You might be interested in
You want to know the temperature today. your friend tells you that it is 6 degrees colder than it was on monday. on monday it wa
Fed [463]
-11 degrees outside today
3 0
3 years ago
Read 2 more answers
Help plz, these questions are very confusing :/
padilas [110]

Answer:

1.

cos ∅=b/h=24/25

:.b=24

h=25

by using Pythagoras law

h²=p²+b²

25²=p²+24²

p²=25²-24²

p=√7²=7

now

sin ∅=P/h=7/25

tan∅=p/b=7/24

2.cos ∅ is your answer

sec∅-sin∅tan∅

1/cos∅-sin²/cos∅

(1-sin²∅)/cos∅

cos²∅/cos∅

cos∅

3.

tan²∅-sec²x

sin²∅/cos²∅-¹/cos²∅

(sin²∅-1)/cos²∅

8 0
2 years ago
The total temperature measured by 4 thermometers was −16 degrees Fahrenheit.
cupoosta [38]
The answer is C. -4 degrees Farenheit
5 0
3 years ago
Read 2 more answers
Factor the following trinomial expression by a method of your choice: 3x2 + 7x-10.
polet [3.4K]
3x² + 7x - 10
3x² - 3x + 10x - 10
3x(x) - 3x(1) + 10(x) - 10(1)
3x(x - 1) + 10(x - 1)
(3x + 10)(x - 1)

The answer is D.
5 0
3 years ago
Read 2 more answers
EMERGENCY!! PLEASE HELP ME IMMEDIATLEY PLEASE!!!PLEASE HELP MEEEE!!!!
denis23 [38]

Answer:

y=1/2-2

Step-by-step explanation:

3 0
2 years ago
Other questions:
  • What is 95% closer to 85% or 100% when rounding?
    5·2 answers
  • The cost to society for underage alcohol use is more than fifty-six ___________ dollars per year.
    11·2 answers
  • Use the photo to answer
    6·1 answer
  • 20 is 10times as much as
    8·2 answers
  • Can someone show me step by step 9÷858
    7·1 answer
  • The distance between the jones house and the smith house is 96 feet.How many yards is that?
    15·1 answer
  • We can use algebraic operations to rewrite expressions, including polynomial expressions. When we rewrite polynomial expressions
    6·1 answer
  • Why are the solutions to the proportions StartFraction 50 over x EndFraction = StartFraction 10 over 20 EndFraction and StartFra
    12·2 answers
  • 9<br> .<br> 27<br> 21<br> Solve for 3
    7·1 answer
  • Find the surface area of the pyramid.
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!