Proportions and Tables

Will spent $3.75 for 3 pounds of granola. How many pounds of granola can Will buy for $10

• 8 pounds

• 7 pounds

• 6 pounds

• 9 pounds

Tags

CCSS.6.RP.A.3B

Is this table proportional? If yes, what is the constant? If no, why not?

Answer explanation

Yes-each x is multiplied by 1/4 to get the y.

k=1/4

Tags

CCSS.7.RP.A.2A

Is this table proportional? If yes, what is the constant? If no, why not?

Answer explanation

No. Each x has a different number to multiply, to get the answer to y.

Tags

CCSS.7.RP.A.2B

Is this table proportional? If yes, what is the constant? If no, why not?

Answer explanation

Yes, every x can be multiplied by 1, to get the y.

k=1

Tags

CCSS.7.RP.A.2B

Answer explanation

12 * x=12x

10 * 15 = 150

12x = 150

/12. /12

x= 12.5

Tags

CCSS.5.NF.B.5B

Is this line proportional? If not, why? If yes, what is the constant?

Answer explanation

This line does not go through (0,0). It is not proportional.

Tags

CCSS.7.RP.A.2D

Answer explanation

21 * x= 21x

7 * 9=63

21x=63

/21. /21

x=3

Answer explanation

9 * x =9x

5 * 18=90

9x=90

/9. /9

x=10

Is this table proportional? If yes, what is the constant? If no, why not?

Answer explanation

Yes-each x is multiplied by 1/8 to get the y.

k=1/8

Tags

CCSS.7.RP.A.2A

Are these proportional? Use cross multiplication to prove/not prove, and show the work

Answer explanation

15 * 4=60

3 * 12=36

They do not match. Not proportional.

Tags

CCSS.7.RP.A.2C