Use the table to answer these questions

Price Quantity 1 Quantity 2

70 0 0

60 0 1

50 1 2

40 2 3

30 3 4

20 4 5

10 5 6

0 6 7

a.Graph the data in the first two columns of the table, with P on the y-axis and Q on the x-axis.

b.What is the slope of the curve?

c.What is the y-intercept

d.What is the slope-intercept form of the curve?

e.Now, using the graph you constructed above, graph the data in the third column of the table.

f.What is the new slope of the curve?

g.What is the new y-intercept?

h.Does the second curve represent an increase or a decrease in the relationship?

i.Does this graph show a POSITIVE relationship between Q and P or a NEGATIVE relationship between Q and P?

j.Is this a LINEAR curve?How do we know (and don't say "just by looking at it")?

Use the table below to answer these questions.

Price Quantity 1 Quantity 2

50 6 7

40 5 6

30 4 5

20 3 4

10 2 3

0 1 2

a.Graph the data in the first two columns of the table, with P on the y-axis and Q on the x-axis.

b.What is the slope of the curve?

c.What is the y-intercept

d.What is the slope-intercept form of the curve?

e.Now, using the graph you constructed above, graph the data in the third column of the table.

f.What is the new slope of the curve?

g.What is the new y-intercept?

h.Does the new curve represent an increase or a decrease in the relationship?

i.Does this graph show a POSITIVE relationship between Q and P or a NEGATIVE relationship between Q and P?

Algebra

1.Calculate the following percentage increases.

a.From 20 to 30.

b.From 30 to 50.

c.From 10 to 20.

2.Calculate the following percentage decreases.

d.From 30 to 20.

e.From 50 to 30.

f.From 20 to 10.