## Thursday, February 21, 2013

### Sara's Algebra Scribepost

Chapter 9 Review questions

7.a) Make a table of values from the graph
b)Does the graph represent a linear relation? Explain.
Yes, it shows a linear relation because its on a straight line and it goes up by the same amount everytime.
c) Is it possible to have other points between the ones on this graph? Explain.
Yes, because if she only works for 1 1/2 hours then there are possible points between the graph.

9. a) Describe the pattern on the graph.
x- starts at 1 goes up by 2
y- starts at 2 goes up by 2

b) Make a table of values using at least five whole number values for x.

c) What is the value of  y when x =2?

3x+2=y
3(2)+2=y
6+2
8=y

d) What is the value of y when x=5?

3x+2=y
3(5)+2=y
15+2=y
17=y

Chapter 9 Practice Test Questions

8 a) What is the price per can of Zap?
Per can of Zap costs \$3
b) Describe three patterns on the graph
-The cans increase by 1 everytime
it has a linear relation because its on a straight line
The cost increase by 3 everytime
c) If you placed a point at (0,0) what would each coordinate represent?
If you placed a point at (0,0) it would represent 0 cans of Zap and 0 dollars

6. If the equation is s= -4+2, the value for s in (-1,s) is ___
s=-4t+2
s= -4(-1)+2
s= 4+2
s=6