Answer:
True
Step-by-step explanation:
For any function of the form 
the coefficient a produces a reflection of the function whenever 
.
We can verify it in the following way.
Take, for example, the function:
Now let's make 
Now let's in the following function:
We have:
We can see then that the function was reflected in the axis -y by placing a negative coefficient a.
You can see more examples in the attached images
Therefore we can conclude that the statement is true.
A)Plugging in our initial statement values of y = 16 when x = 10, we get:
16 = 10k
Divide each side by 10 to solve for k:
16/10=
k = 1.6
Solve the second part of the variation equation:
Because we have found our relationship constant k = 1.6, we form our new variation equation:
y = 1.6x
Since we were given that x, we have
y = 1.6()
y = 0
B)Plugging in our initial statement values of y = 1 when x = 15, we get:
1 = 15k
Divide each side by 15 to solve for k:
1/15
=15k
k = 0.066666666666667
-1.3+1.9=.6
the two minus signs turn into a plus so you add 1.9 to -1.3
90x+120 is equivalent to 30 (3x+4)
