Answer:
y= -5x
Step-by-step explanation:
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Answer:
A
Step-by-step explanation:
To calculate the scale factor k, find the ratio of corresponding sides
= = 6
= = 6
Hence the scale factor k = 6 → A
3 is the correct answer i think
Y and x have a relationship that is directly proportional;
y = 7 when x = 2
when y = 21 and x = ?
y : x
7 : 2
if we multiply 7 wit 3, the answer is 21
3 x 7 : 2 x 3
21 : 6
So, when y = 21, x = 6