7: The point B (-8,5) is dilated from the origin with a scale factor of 12 . What are the coordinates of B'? A (−6,3) B (−4,2.5
1 answer:
Answer:
The correct option is option B.
The coordinate of B' is (-4,2.5).
Step-by-step explanation:
Formula of dilation:
Image = (pre-image)×(scale factor)
Scale factor:
The amount by which the shrinks or grows is called " scale factor".
- If the scale factor less than 1 then the shape shrinks.
- If the sale factor equal to 1 then the shape remains same.
- If the scale factor greater than 1 then the shape enlarged.
Given point is B(-8,5)
Scale factor is .
The co-ordinate of image B is
=(-4,2.5)
The coordinate of B' is (-4,2.5).
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Answer:
B.
Step-by-step explanation:
To find the inverse of a function/equation:
- Replace f(x) with y: y=5x+4
- Switch x and y: x=5y+4
- Solve for y: x-4=5y ->
- Write in standard inverse notation:
I hope this helps!!
gl!
1. You need to multiply the denominator by something that will make the content of the radical be a square—so that when you take the square root, you get something rational. Easiest and best is to multiply by √6. Of course, you must multiply the numerator by the same thing. Then simplify.
2. Identify the squares under the radical and remove them.