Answer:
Yes!
Step-by-step explanation:
GIVENS:
A = (-2,-5)
B = (1,-3)
C = (2,-5)
A' = (-2,5)
B' = (1,3)
C' = (2,5)
We can see analytically (through the points) and by inspection that the triangles seem to be reflected in the x-axis.
INSPECTION
The plot shows us this because any point we pick from one triangle we can see the reflected point on the opposite side (like there is a horizontal mirror on the x axis)
ANALYTICALLY
The points show us this because all the pairs (A and A' for ex) share the same x values but have negative y values!. So if we know point A is -2,-5, by taking the negative of the y we can see its reflected point A' which has the value of -2,5.
Answer:
C) C(x) = 5 +0.25x
Step-by-step explanation:
Let
C(x) ---> the total cost monthly
x ---> is the number of hours in a month
we know that
he linear equation in slope intercept form is given by
![C(x)=mx+b](https://tex.z-dn.net/?f=C%28x%29%3Dmx%2Bb)
where
m is the slope or unit rate
b is the y-intercept or initial value
In this problem we have
The slope is equal to
![m=\$0.25\ per\ hour](https://tex.z-dn.net/?f=m%3D%5C%240.25%5C%20per%5C%20hour)
The initial value or y-intercept is equal to
![b=\$5.00](https://tex.z-dn.net/?f=b%3D%5C%245.00)
substitute
![C(x)=0.25x+5.00](https://tex.z-dn.net/?f=C%28x%29%3D0.25x%2B5.00)
Understand that a relationship between<span> two variables,</span>x and y<span>, is </span>proportional<span> if it can be expressed in the form </span>xy<span> = k or </span>y<span> = kx. ... Understand that the graph of a</span>proportional relationship<span> is a line through the origin whose slope is the unit rate (constant of proportionality)</span>
It would be 1............
So alll BUT 80 were sold
198=80+sold
subtract 80 from both sides
118=sold
so if 1.75 per book
amount collected=number of books times cost per books
amount collected=118 times 1.75
amount collected=206.5
the amount colected is $206.50