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mixas84 [53]
3 years ago
5

Reflection across y = x what does this mean

Mathematics
1 answer:
Tatiana [17]3 years ago
3 0
Rule= (x,y) is now (y,x) so coordinates of (5,4) now would be (4,5). this is the rule for y=x problems so you take the coordinates and flip them for every point. 
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The equation of a line is -6x - 2y =- 18. What is the x-intercept of the line?
ANTONII [103]
You will want to solve for where y=0.

-6x - 2(0) = -18.

-6x = -18

x = 3

The equation's x-intercept is at (3,0)
3 0
3 years ago
Read 2 more answers
Solve 2(y – 3) = 1.2 – y.
Ne4ueva [31]
First write down your equation. 2(y-3)=1.2-y. the distribute your 2. 2 times y is 2y and 2 times -3 is -6. now you have 2y-6=1.2-y. bring your y to the other side of the equation with the opposite sign and do the same with your 6. you have 2y+y=1.2+6. combine the like terms and constants. now you have 3y=7.2. divide bother sides of the equal by 3 to get y alone. 3y/3= 7.2/3. your answer is y=2.4.
6 0
3 years ago
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Write 15 and 1/2 as a decimal.
pshichka [43]
Well If you mean't 15 1/2 it is 15.5 This is because a decimal is made for parting using place values like tenths, hundredths, thousandths, etc. The 1/2 part is is .5 because 5 is half of 10.
*I explained a bit more in the comments of my answer.
4 0
4 years ago
In 1924, the tempature in Fairfield Montana, dropped from 63 degrees to negative 21 degrees in 12 hours. What was the average ho
Tanzania [10]

Answer:

​7.5°/hr

Step-by-step explanation:

  63-(-27)/12

= 90/12

= 7.5°/hr

4 0
3 years ago
Which choice correctly explains which product is the better buy? Coffee Brand A is sold for $6.99 per pound Coffee Brand B is so
Valentin [98]

Answer: Choice B

Coffee Brand A is a better buy because its unit rate is $0.44 per ounce

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

Explanation:

Brand A is sold for $6.99 per pound, which is the same as saying $6.99 per 16 ounces. The unit rate is 6.99/16 = 0.436875 = 0.44 dollars per ounce

Brand B is sold for $5.69 for 12 ounces. The unit rate is  5.69/12 = 0.47416 = 0.47 dollars per ounce

Brand A is cheaper per ounce compared to brand B.

------------------

Here's another way we can look at it

Brand A is $6.99 per 16 ounces. We can set up the equation below

6.99 dollars = 16 ounces

then divide both sides by 16 to turn "16 ounces" into "1 ounce"

So,

6.99 dollars = 16 ounces

6.99/16 dollars = 16/16 ounces

0.436875 dollars = 1 ounce

0.44 dollars = 1 ounce

is the unit rate for brand A.

Similar steps would happen with brand B as well.

5 0
3 years ago
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