# Algebra

posted by .

Determine if the relationship represented in the table is linear. If it is linear, write an equation.

how do you determine if a table is linear here is the table I am looking at....

x 2 5 7 10 12 20

y -3 0 2 5 7 15

please guide me in the right direction...

• Algebra -

pick a delta x. Say from 2to 5,or a deltax of 3
Notice the corresponding delta y is -3 to 0, a deltay of 3

slope= deltaty/deltax= 3/3=1

Now try it for other pairs.

• Algebra -

7 to 10 would then be 3 and 2 to 5 is also 3 and then the last would be 12 to 20 would be 8 and 7 to 15 would be 8 so this would be a linear but then how do you write an equation?

• Algebra -

y= mx+b

you know m as 1.

y= x+b
now put in any x,y pair, and solve for b.

• Algebra -

y=1(3/8)+3?? is that right?

• Algebra -

No. y=x+b
2=7+b
7-2=b I think you can get it from here :)

## Similar Questions

1. ### Math

For which table(s) of values in Exercises 39–42 is the relationship linear?
2. ### Algebra

Determine if the relationship represented in the table is linear. If it is linear, write an equation. x 2 5 7 10 12 20 y -3 0 2 5 7 15 A) Linear; y = x - -5 B) Linear; y = -5x C) Linear; y = x + -5 D) Not linear I'm thinking it's C …
3. ### Math

Determine if the relationship represented in the table is linear. If it is linear, write an equation. x|-2 5 7 10 12 20 y| 3 0 2 5 7 15 My answer is: Linear; y=x+ -5 Is this correct?
4. ### Math

For which table(s) of values in Exercises 39–42 is the relationship linear?
5. ### Algebra

For which table(s) of values in Exercises 39–42 is the relationship linear?
6. ### math

For which table(s) of values in Exercises 39–42 is the relationship linear?
7. ### math/linear equation

Good morning. I have a question that I'm stuck on. I need to determine if the relationship represented is linear and if it is, then I need to write an equation for it. Help is deeply appreciated. For x- 2,4,7,10,12,20 For y- 5,7,10,13,15,23
8. ### math

Determine if the relationship represented is linear. x=5,10,15,20,25,30 and y=50,60,70,80,80,90 I could not find a relationship that worked for all the numbers so I would say it is not linear. Correct?
9. ### Algebra

The table shows the relationship between the number of players on a team and the minutes each player gets to play Players Minutes 7 35 8 30 9 25 10 20 Is the relationship a function that is decreasing or increasing; is the relationship …
10. ### algebra

The table shows how much a carpenter charges for work. Is the relationship shown by the data in the table linear. Explain your answer. hours worked Amount Charged(\$) 1 25 2 40 3 60 4 80 my answer is: 40-25 = 15 60-40= 20 80-60=20 15=/20 …

More Similar Questions