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Marta_Voda [28]
3 years ago
13

What is the image of (4,-7) after a reflection over the line y=x

Mathematics
1 answer:
snow_lady [41]3 years ago
3 0

Answer:

(-4,7)

Step-by-step explanation:

solved by graphing

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36.125...............

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If the pressure is 6 pounds per inch when the temperature is 440 F, find the pressure exerted when the temperature of the gas is
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6 0
3 years ago
Solve this absolute value equation and show all work.
vitfil [10]
I was confused at first until I realized that you'd shared not one, not two, but three questions in one post.  would you please post just one question at a time to avoid this.

I'll focus on your second question only:  Solve <span>3 + |2x - 4| = 15.

Subtr. 3 from both sides.  Result:  |2x - 4| = 12

Divide all terms by 2, to reduce:    |x - 2| = 6

Case 1:  x-2 is already +, so we don't need |    |:

                       x - 2 = 6    =>   x = 8 (first answer)

Case 2:  x-2 is negative, so |2x-4| = -(2x-4) = 6

             Then   -2x + 8 = 6.  Subtr. 8 from both sides:   -2x = -2

               Div both sides by -2:  x = 1 (second answer)

Be sure to check these results by subst. them into the original equation.

Please post your other questions separately.  Thanks and good luck!

</span>
6 0
3 years ago
If y=-12, when x=9, find y when x=-4
tia_tia [17]
2 different things
if it is
xy=k or if it is x/y=k
direct or inverse variation

I will do the x/y=k one
9/-12=-3/4
x=-4
-3/4=-4/y
mutiply both sides by y
-3/4y=-4
mutiply both sides by -4/3 to clear fraction
y=16/3




6 0
3 years ago
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