Find the missing number ___:7 = 12:21 A.14 B.12 C.4 D.3
1 answer:
You might be interested in
Answer:
B. The student incorrectly calculated the scale factor to be –2
Step-by-step explanation:
Given that :
After a dilation with a center of (0, 0), a point was mapped as (4, –6) → (12, y).
The student determined y to be -2
If a figure dilated with a center of (0, 0) and scale factor k, then
(x , y) → (kx , ky)
(4, -6) → (12, y)
k = 3
Thus; the scale factor is 3
Now; the y-coordinate can now be calculated as;
ky = (3 × -6)
ky = -18
Therefore; the value of y = -18 and the student incorrectly calculated the scale factor to be -2.
Answer:
line 1 and 2 = Perpendicular
line 1 and 3 = Perpendicular
line 2 and 3 = Parralel
Step-by-step explanation:
Using Desmos to put in the equations, it shows that it's the answer I provided above.
