Question

1. What is the slope for the following table of values?

Books bought: 1,3,5,7
Total amount spent: 21,39,57,75

2. Write an equation in y = mx + b form for the past problems table.
A: y=3x+21
B: y=9x+12
C: y=5x+21
D: y=7x+12

3. According to the last problems table, predict the total cost if you bought 20 books.
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4. Find the slope for the values in the table below.
X: -1,0,1,2
Y: 5,3,1,-1

5. Write an equation for this table. (Same as last)
X: -1,0,1,2
Y: 5,3,1,-1

10. Predict the Y value if x=-3. ( same as last problems table)

Answer 1

slope is rise/run,
so pick two points from the table, say,
(3,39) and (5,57) what is the distance in the x term from one point to the next? <-this will be your 'run'
what is the distance in the y term from the first point to the next? <-this will be your 'rise' term.
then divide: rise/run = slope ^_^