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3 years ago

What is the algebraic rule for reflection

2 answers:

7 0

When you reflect a point across the y-axis, the y coordinate remains the same, but the x-coordinates is transformed into its oppisite

BabaBlast [244]3 years ago

4 0

Answer:

reflection across line y=x:

(x,y)---->(y,x)

reflection across line y=-x:

(x,y)---->(-y,-x)

reflection across x-axis:

(x,y)---->(x,-y)

reflection across y-axis:

(x,y)---->(-x,y)

Step-by-step explanation:

You might be interested in

Find the slope and y intercept of the line whose equation is -6x+y=-4

Ad libitum [116K]

For
ax+by=c
slope=-a/b

we have
-6x+1y=-4
slope=-6/-1=6
slope is 6

yint is where x=0

-6(0)+y=-4
0+y=-4
y=-4
yint is at y=-4 or (0,-4)

8 0

3 years ago

Based on the diagram below, what is the measure of arc DC ?

emmainna [20.7K]

Given:

A diagram of a circle O, $arc(AB)=y^\circ, arc(CD)=(80+y)^\circ$ .

To find:

The measure of arc DC.

Solution:

According to the angle of intersecting chords theorem:

Angle at intersection of chords = Half of the sum of intercepted arcs.

Let $\theta$ be the angle between the intersection of chords AC and BD.

$\theta +112^\circ=180^\circ$ (Linear pair)

$\theta =180^\circ-112^\circ$

$\theta =68^\circ$

Using the angle of intersecting chords theorem, we get

$\theta=\dfrac{arc(AB)+arc(CD)}{2}$

$68^\circ =\dfrac{y^\circ+(80+y)^\circ}{2}$

$136^\circ =(80+2y)^\circ$

On simplification, we get

$136=80+2y$

$136-80=2y$

$56=2y$

Divide both sides by 2.

$28=y$

Now,

$arc(DC)=(80+y)^\circ$

$arc(DC)=(80+28)^\circ$

$arc(DC)=108^\circ$

Therefore, the correct option is C.

5 0

3 years ago

The height of a prism,cylinder, pyramid, or cone is always_ to the base

m_a_m_a [10]

Answer:

The height of a prism, cylinder, pyramid, or cone is from base to base?? Except for pyramid.. for pyramid it is from the center of the base to the point at the top of the pyramid I guess.

Step-by-step explanation:

Hope that helped!

6 0

3 years ago

a stock has a price of $58.63. This is $5.92 less than the price of stock yesterday. Write and solve an equation to find the pri

masha68 [24]

Answer:

$52.71

Step-by-step explanation:

Today's price= $58.63

Yesterday's price= y

Difference= $5.92

y+5.92 = 58.63

y = 58.63 - 5.92

= $52.71

8 0

3 years ago

What are the solutions to x2−10x=39? Question 4 options: 3 and -13 1 and -39 -1 and 39 -3 and 13

aliina [53]

Answer:

$x=-3,13$

Step-by-step explanation:

Given: $x^2-10x=39$

To find: solutions of the given equation

Solution:

$x^2-10x=39\\x^2-10x-39=0$

Write $-10=-13+3$

Therefore,

$x^2-13x+3x-39=0\\x(x-13)+3(x-13)=0\\(x+3)(x-13)=0\\x=-3,13$

So, solutions of the given equation are $-3$ and $13$ .

8 0

3 years ago