Question

Help me solve plsssssss

Answer 1

2. C

3. BCEF

4. C

Explanation:

2. In a function, the x value cannot have two y values (for example: if the points are (1,2) and (1,3) then that is not a function).

In this question, none of the x values repeat with multiple y values, so it is a function. the answer is C.

It is not D, because not all straight lines are functions. If the straight line is vertical, then there is only one x value and it has infinitely many values for y. So, not all straight lines are necessarily functions.

3. Range is the y values. The points are (3,4), (-2,3), (7,1), (2, 1/2)

Here, the y values are 4, 3, 1, and 1/2

Choices B,C,E,F are the answers.

4. If the domain is x
`\geq`0, then 0 is the lowest we can plug into x.

y=2(0)+6

y=6

So, the answer is C. y
`\geq`6

You were on the right track :)