Question

Which equation represents a linear function?
y – 2 = –5(x – 2)
x + 7 = –4(x + 8)
y – 3 = y(x + 4)
y + 9 = x(x – 1)

Answer 1

For starters: Eliminate the fourth choice. That's definitelyl not a linear function, becasue you'd have the square of x, or x^2, in it.
Why not multiply out the right sides of the remaining 3 possible answers?

Answer 2

would it the second answer?

Answer 3

You can graph them each to figure out if it is linear.

Answer 4

True, but following my suggestion would be easier and shorter.

Answer 5

iYuko: You may continue if you wish, BUT do NOT do the other person's work for him/her.

Answer 6

Yes, but she needs to understand what the difference is in each.

Answer 7

For starters: Eliminate the fourth choice. That's definitely not a linear function, becasue you'd have the square of x, or x^2, in it.
Why not multiply out the right sides of the remaining 3 possible answers?

Answer 8

@chelseafry16 Do you know what a linear function is?

Answer 9

yes i do.

Answer 10

So you can graph the functions to see what one is linear.

Answer 11

ok thank you

Answer 12

Chelsea: Last notice:

For starters: Eliminate the fourth choice. That's definitely not a linear function, becasue you'd have the square of x, or x^2, in it.

Why not multiply out the right sides of the remaining 3 possible answers?

This is the easiest approach here.

Answer 13

i get what you are trying to explain. mathmale

Answer 14

Good. If you have further questions about this problem, ask them now; otherwise please close your post.