Question

the image of A(3-a,2b+1) under the reflection in the x-axis is A'(2a,2a+b).

find the value of a and b.
fast ​

Answer 1

Answer:

Given,

P’ (2, -3) is the reflection of P (a, b) in the x-axis

Hence, the co-ordinates of P’ will be (a, – b) but P’ is (2, -3)

On comparing, we get a = 2, b = 3

Thus, the co-ordinates of P will be (2, 3)

And,

P” is the image of P when reflected in y-axis

Hence, the co-ordinate of P” will be ( – 2, 3)

Now, draw a line x = 4, which is parallel to y-axis

As P’” is the image of P when it is reflected in the line x = 4,

So, P’” is its reflection.

Thus, the co-ordinates of P”’ will be (6, 3).

Step-by-step explanation:

I hope it is helpful to you

Answer 2

Answer:

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Step-by-step explanation:

Some non - metals and their uses are listed below :

Oxygen is used for breathing.

Chlorine is used for purifying water.

Phosphorous is used in crackers.

Non - metals like nitrogen is used in fertilizers.

Graphite is used as a good conductor of electricity.

Potassium is used in fertilizers.

Nitrogen is used by plants.