If y∞x then y=kx where k is constant to find k
k=y/x then substitute the values
k=30/-10=-3 to find x when y is 4
x=y/k=4/-3=-4/3 option A
Answer:
99
Step-by-step explanation:
x = 90 x 10/100 + 90
=> x = 900/100 + 90
=> x = 9 + 90
=> x = 99
Answer:
x ≤ 7/6
Step-by-step explanation:
12x - 5 ≤ 9 (add 5 to both sides)
12x ≤ 9 + 5
12x ≤ 14 (divide both sides by 12)
x ≤ 14/12
x ≤ 7/6