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zmey [24]
3 years ago
12

Which rule describes the transformation that is a reflection across the line y=x?

Mathematics
1 answer:
Vesnalui [34]3 years ago
7 0
P(x,y) = P'(y,x)


It interchanges the x- and y-coordinates.
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Which rule matches the function graphed below? <br> y= - 2x.<br> y= x+4<br> y = 2x<br> y = x -4
umka21 [38]
y=-2x 
We know this because the slope is -2 (slope is found using rise/run, in this case the rise is 2 and the run is -1, so 2/-1=-2), and the y-intercept is at 0 (the y-intercept is the point at which a line crosses the y-axis).

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7 0
3 years ago
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HELPP please ??? I’ll appreciate it a lot .
victus00 [196]

Answer:   \sqrt{41}

On a keyboard you would type sqrt(41)

===========================================

Work Shown:

\text{point L} = (x_1, y_1) = (2,-1)\\\\\text{point N} = (x_2, y_2) = (7,-5)\\\\

d = \text{distance from L to N}\\\\d = \sqrt{ (x_1-x_2)^2 + (y_1-y_2)^2 } \ \text{ ... distance formula}\\\\d = \sqrt{ (2-7)^2 + (-1-(-5))^2 }\\\\d = \sqrt{ (2-7)^2 + (-1+5)^2 }\\\\d = \sqrt{ (-5)^2 + (4)^2 }\\\\d = \sqrt{ 25 + 16 }\\\\d = \sqrt{ 41 }\\\\

----------

A slight alternative is to plot the point M(2,-5) to form right triangle LMN. The 90 degree angle is at point M.

The legs are of length LM = 4 and MN = 5, which are found by subtracting the x coordinates together and the y coordinates together (or you can count the spaces). From there, use the Pythagorean theorem to get the hypotenuse LN.

The distance formula is an altered version of the Pythagorean theorem.

5 0
3 years ago
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Please help me on this problem !
frosja888 [35]

Answer:

9

Step-by-step explanation:

it's an isosceles right ∆.

so (9√2)^2 = 81*2= 162 = 2s^2

let x=y=s

s^2 = 81

s = 9

3 0
3 years ago
How are the lengths of the sides of the triangle and the measure of its angles related? 5cm,7cm,10cm.
Veronika [31]

5cm,7cm,and 10cm? im no professional but might wanna double check first


4 0
3 years ago
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Write two numbers that multiply to the value on the top and add to the value on bottom
Bas_tet [7]

Answer:

Step-by-step explanation:

-10 and 9

-10×9=-90

-10+9=-1

3 0
3 years ago
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