Question

1. What is the distance between the points (1, 4) and (4, 8)?


I said Distance = 5



2. Find the slope between (1, 4) and (4, 8)


I said 4/3


3. Are the expressions (4x+4)/4 and x+1 equivalent?

I said Yes

4. Simplify (x+y)2

x2 + 2xy + y2

5. Is (x – y )2 = x2 – y2?

No. It is equal to x2 - 2xy + y2


6. Identify each equation as true or false. If it’s true, explain why. If it’s false, provide a counterexample.

a. (4y+4)/4=y
False it is equal to y + 1

b.(3x+3y)/3=x+y

True

Answer 1

all look ok to me.