Your insight that the function values differ by 5 every time is very important. So your f(x) will contain 5x as a term. You have to find a constant to add or subtract to make sure f(1)=-2.
f(x) = 5x-7 does the job.
Answer:
A
Step-by-step explanation:
The line on the right has equation y = x + 1
The absolute value function always gives a positive value
Thus the equation is y = | x + 1 | → A
Answer:
$1.98
Step-by-step explanation:
1.65/5=0.33
1.65+0.33=1.98
check: 1.98/6 =0.33
0.33x5=1.65
Answer:
c
Step-by-step explanation:
we are given
y varies directly with x
so, we can write equation as
where
k is a constant
now, we need to find k
we are given
y=3 when x=8
so, we can plug it and find k
now, we can plug it back
(A)
we have got equation as
for finding inverse , we can switch x and y
now, we can solve for y
............Answer
(B)
we have
we can plug x=4 and find y
................Answer
