Answer:
Step-by-step explanation:
3x - 3y = 3(x-y)
Answer:
Step-by-step explanation:
1 cm=10 km
8 cm=10×8=80 km
Answer:
21+10.5 which would equal 31.5
Step-by-step explanation:
Answer:
Expression: Y = -10/3 X
Y = 10/3
Step-by-step explanation:
If Y varies directly as X, then;
Y∝X
Y = kX
k is the constant of variation
If Y = 10 and X = -3
10 = -3k
k = -10/3
Substitute k = -10/3 into the expression Y = kX
Y = -10/3 X
This gives the required expression
To get the value of Y when X = -1
Recall that Y = kX
Y = -10/3 (-1)
Y = 10/3
Hence the value of Y is 10/3
