Answer:
0
Step-by-step explanation:
3x - 9 if x = 3
Substitute:
3(3) - 9 =
9 - 9 = 0
This can be written as a function: f(x) = 3x - 9
f(3) = 3x - 9
f(3) = 3(3) - 9
f(3) = 9 - 9
f(3) = 0
-Chetan K
Answer:
Step-by-step explanation:
After 4 years the age of father is twice as old as his son . 5 years before the father age was 1 year more than triple age of his son.
18 = 2x +4
Subtract 4 from each side:
14 = 2x
divide both sides by 2:
X = 14/2 = 7 dollars per hour
Explanation-
3/7 is not proportional because if you divide 3 by 7 you don’t get a whole number or nice fraction
8/28 is proportional because if you divide the fraction by 4 you get 2/7 which is a nice fraction
Answer:
Step-by-step explanation:
y=-3x+5
y=-3(1)+5
y=-3+5
y=2
(1,2)
y=-3x+5
y=-3(2)+5
y=-6+5
y=-1
(2,-1)
y=-3x+5
y=-3(3)+5
y=-15+5
y=-10
(3,-10)
