Short Daily Review

Short Daily Review

Multiple Choice

Which expression is equivalent to  

 $\sqrt{72}$  ?

•  $\sqrt{2}$  

•  $6\sqrt{2}$  

• 72

•  $2\sqrt{6}$  

Slope/ Rate of Change from graph

rise/ run

Multiple Choice

To rent a bike, Max pays a flat rate plus an hourly rental fee. The graph shows the amount, C dollars, he pays based on the number of hours, t, he uses the bike.

• The rate increased by 2.5 per hour.

• The minimum total cost was 0.

• The initial total cost was 15 dollars.

• The total cost was measured for 10 hour.

Multiple Choice

What is the slope of the line shown on the grid?

• slope is undefined

• slope is zero

Slope from 2 points

formula

Multiple Choice

. The points (-15, -3) and (-7, -1) both lie on the graph of a linear function. What is the rate of change of y with respect to x?

• $\ -\frac{1}{4}$

• $\frac{1}{4}$

• $-4$

• $4$

Slope from table

 $\frac{\Delta y}{\Delta x}=\frac{difference\ y}{difference\ x}$  

Fill in the Blanks

y=mx+b

m=slope

b=y-int

Multiple Choice

The graph below models the depth of a mountain stream from the beginning of heavy rainstorm till the end.



What equation models the points on the graph?

• $y=9x$

• $y=7x+10$

• $y=7x$

• $y=45x+10$