Question

y < 4x – 2

Answer 1

Graph y=4x-2

Can you exclude any of the choices based on the graph of y=4x-2 you made?

Answer 2

y=-0.5?

Answer 3

Do you know how to read equations for lines in slope-intercept form?

Answer 4

Slope-intercept form is when you have y=mx+b

b is your y-intercept. That means your line should have a point in it that is (0,b).

m is the slope. So for every 1 unit to the right you go (on the x-axis), you should move up m units on the y axis.

So for y=4x-2, your graph should have a point (0,-2), and whenever you move 1 space to the right, your y-value should be 4 higher than the previous one. (1,2), (2,6), (3,10), (4, 14) and so on.

Answer 5

oh, that equation. alright

Answer 6

let me see

Answer 7

I can't figure it out, I'm sorry. I don't remember

Answer 8

Well, look at the four graphs you have. You can exclude any choice that doesn't have (0,-2) as a point on the main line. For example, the first one has a point at (0,2), but not at (0,-2). So you know that can't be correct.

Answer 9

third one is y=2x-4

Answer 10

So it is the third one? I was thinking it might be the second one.

Answer 11

No, what GCR92 is saying is that the third graph is also not the answer.

Answer 12

yep

Answer 13

ohh! yeah that makes sense.

Answer 14

So is it the second one? Am I right?

Answer 15

It's the 4th I believe

Answer 16

Yes, it is the second one. Since it less than, the area under the line should be shaded. This is the second graph. The fourth graph has the area above the line shaded in (this would correspond to y > 4x-2).

Answer 17

Why do you think it's the 4th? Yeah, i agree with it being the second

Answer 18

You are both right

Answer 19

i changed the sign accidentally, my bad

Answer 20

No worries.

Answer 21

ok thanks guys :)