Compare Rate of Change and Initial Values

Jude observes two small plants in a garden. He records the growth of Plant 1 over several days and plots points (0,2.5), (1,4.5) (2,6.5) . He also determines that the function y = 2 + 2.5x represents the height y (in centimeters) of Plant 2 over x days. Which statement correctly compares the growth of the plants?

• Plant 2 grows faster than Plant 1.

• Plant 1 grows faster than Plant 2.

• Plant 2 grows faster than Plant 1 at first, but Plant 1 starts to grow faster after some time.

• The two plants grow at the same rate.

Tags

CCSS.8.F.A.2

CCSS.HSF.IF.C.9

Jude observes two small plants in a garden. He records the growth of Plant 1 over several days and plots points (0,3.5), (1,7) (2,10.5) . He also determines that the function y = 2 + 2.5x represents the height y (in centimeters) of Plant 2 over x days. Which statement correctly compares the growth of the plants?

• Plant 2 grows faster than Plant 1.

• Plant 1 grows faster than Plant 2.

• Plant 2 grows faster than Plant 1 at first, but Plant 1 starts to grow faster after some time.

• The two plants grow at the same rate.

Tags

CCSS.8.F.A.2

CCSS.HSF.IF.C.9

Jude observes two small plants in a garden. He records the growth of Plant 1 over several days and plots points (0,2.5), (1,5) (2,7.5) . He also determines that the function y = 2 + 2.5x represents the height y (in centimeters) of Plant 2 over x days. Which statement correctly compares the growth of the plants?

• Plant 2 grows faster than Plant 1.

• Plant 1 grows faster than Plant 2.

• Plant 2 grows faster than Plant 1 at first, but Plant 1 starts to grow faster after some time.

• The two plants grow at the same rate.

Tags

CCSS.8.F.A.2

CCSS.HSF.IF.C.9

• Car A and Car B are traveling at the same rate per minute.

Answer explanation

the rate of graph is 2/3 so what is larger? 2/3 or 5/6? can divide if needed to find out which larger

then answer choices say times greater than so that division to find out

have to turn into mixed number and reduce

Tags

CCSS.8.EE.B.5

• Car A and Car B are traveling at the same rate per minute.

Answer explanation

same slopes so same speed per min

Tags

CCSS.8.EE.B.5

• Car A and Car B are traveling at the same rate per minute.

Tags

CCSS.8.EE.B.5

Select the true statement.

• This table represents a linear function since the rate of change is always 2.

• This table represents a nonlinear function since the y-intercept is 12.

• This table represents a nonlinear function since the rate of change is not constant.

Tags

CCSS.8.F.A.3

Who is going at a faster rate and why?

• The tortoise because it got a head start

• The hare because its line is more steep

• They are going the same speed because the lines crossed

• I don't know

Tags

CCSS.8.EE.B.5

Why is this function linear?

• This is a linear function because it does not have a constant rate of change.

• This is a linear function because it creates a curved line.

• This is a linear function because it has a constant rate of change.

• This is a linear function because it's y-intercept is (0,2)

Tags

CCSS.HSF-LE.A.1B

Find the rate of change

• 3

• -3

• 20

• Not a constant slope/Non-Linear

Tags

CCSS.8.F.B.4

CCSS.HSF.IF.B.6