Find the preimage of the point (4, 3) under the given transformation.A transformation T : (x, y) (x + 3, y - 1).

Question

Find the preimage of the point (4, 3) under the given transformation.A transformation T : (x, y)  (x + 3, y - 1).

anonymous · Answer

(7, 4),(7, 2),(1, 2),(1, 4)

amistre64 · Answer

a "preimage"  is where it came from

how do you undo a +3  and a -1?

amistre64 · Answer

spose you took 3 steps forward and 1 step from the couch to the left to get to the fridge ... how would you find your way back to the couch

anonymous · Answer

add i gus

amistre64 · Answer

sounds plausible

since, lets undo x+3,  by x-3

lets undo y-1,  by y+1

anonymous · Answer

wats my answer

amistre64 · Answer

the answer will be what the end of the process gets us .... its the process that needs to be understood

anonymous · Answer

lol i knw the answer 
to this help with this one

anonymous · Answer

A central angle measuring 120° intercepts an arc in a circle whose radius is 3.

What is length of the arc of the circle formed by this central angle? Round the length of the arc to the nearest hundredth of unit.

amistre64 · Answer

circumference is the arc length of a 360 degree central angle:

what is the formula for a circumference?

anonymous · Answer

which one

amistre64 · Answer

just the general circumference of a circle will do.  we can modify it from there

anonymous · Answer

3.14.

amistre64 · Answer

nah, that just an approximation of pi

lets say:

circumference of a circle is:  2pi * radius

2pi is equal to 360 degrees

in general, the length of an arc is:  (angle in radians) * radius

amistre64 · Answer

to convert 120 into radians, we use the ratio:  2pi/360

120 * 2pi/360 * 3  will then be our arclength