You should use point-slope form: y-y1 = m(x-x1)
y+9 = 4(x)
y-4x=-9
4x-y=9 (B)
In order to prove this, we have to put the trapezoid to the coordinate system. In the attached photo you can see how it has to be put. The coordinates for the vertices of trapezoid written according to the midpoint principle. By using the distance between two points formula, we can find the coordinates for the vertices of the rhombus.

and

. The coordinates of D is


and

. The coordinates of E is

Since we have the reflection in this graph, the coordinates of F is

And the coordinates of G is (0,0).
Using the distance formula, we can find that



Since all the sides are equal this completes our proof. Additionally, we can find the distances of EG and DF in order to show that the diagonals of this rhombus are not equal. So that it is not a square, but rhombus.
Answer:
The correct option is C) 
Step-by-step explanation:
Consider the provided information.
A farmer charges $6 for 4 pounds of tomatoes.
First find the unit rate as shown below:

Therefore, the cost of 1 pound of tomatoes is $1.5
let d represents the dollars he should charge and p represent the pounds of tomatoes farmer sold.
Thus the required equation is 
Hence, the correct option is C) 
Answer:
10
Step-by-step explanation:
You do 5C3, which is 5!/((5-3)!3!) -->
5*4*3*2*1/(2*1*3*2*1) =
10