Which of the following equations represent functions? If the relation is not a function, provide a justification. 1.
y=4-(1/2)x
2.
x=7
3.
x^2+y=1
4.
x^2+y^2=1

What is the value of x? enter your answer in the box. (cm)

Which value of m will create a system of parallel lines with no solution? y = mx - 6 8x - 4y = 12

When you have 25 numbers, and jake picks 3 random numbers and puts them back, what is the chance bob has of picking those 3 numbers when he picks 6 random numbers (without putting them back)? explain.