Evaluate each expression, using the values x = 13
and y = 7

X + y

X - y

Xy

2x + y

X + 2y

2x + 2y

4x - 3y

X + y - x- y

7x - 13y

An equation where variables are used to represent known values—function notation true or false

In right ∆abc shown below, the midpoint of hypotenuse ac is located at d and segment bd is drawn.if ab = 12 and bc = 16, then explain why bd = 10. hint: consider what you know about the diagonals of a rectangle.

If you double the input of a function and it results in half the output, and if you triple the input and it results in a third of the output, what can be guessed about the function? check all that apply.