Answer :
k(-7; y) → (14; –5)
(14; -5) = (-7k; ky) therefore -7k = 14 and ky = -5
-7k = 14 ⇒ k = -2
subtitute to ky = -5
-2y = -5 |divide both sides by (-2)
y = 2.5
Answer: b. 2.5
(14; -5) = (-7k; ky) therefore -7k = 14 and ky = -5
-7k = 14 ⇒ k = -2
subtitute to ky = -5
-2y = -5 |divide both sides by (-2)
y = 2.5
Answer: b. 2.5