For any integer x, x^2-x will always produce an even value. true or false

That true. You have two ways to show it:

Method 1:

Factor the expression. You have

So, you're multiplying two consecutive numbers. One of them must be even, and if a factor of a product is even, the result will be even.

Method 2:

If x is even, is even as well. So, is a subtraction between even numbers, which gives an even number.

If x is odd, is odd as well. So, is a subtraction between odd numbers, which gives an even number.

f(x) = - 2/3x + 5; f(5/2)

substitute 5/2 in for x:

f(5/2) = -2/3(5/2) + 5

simplify the right side:

f(5/2) = -5/3 + 5

f(5/2) = 10/3

answer:

f(5/2) = 10/3

i hope this you!

i can't read the graph

step-by-step explanation: