alg 1 sem 1

Identify the common difference.

97, 86, 75, 64, ...

Book page 191

• 8

• 11

• -11

• -8

Which of these lines has a slope of -3?

Book page 162

• A

• B

• C

• D

Write the equation of the line.

Book page 171

• y= -1x-3

• y= -3x-1

• y=-1/3x-1

• y= -3x-3

Write the slope-intercept form of the equation with the given point and slope:

Hint: you have to solve for b.

m = 3 through (1,5)

Book page 225

• y=3x+2

• y=3x-2

• none

• y=3x+5

Write in

slope-intercept form

of the line containing the points

(1, 2) and (-2, 5)

Book page 226

• y=x+3

• y = -x + 3

• y=-x+1

• y=3x+3

What type of correlation does this graph have?

Book page 247

• positive

• negative

• none

• all of the above

The scatter plot shows the relationship between the number of chapters and the total number of pages for several books. Use the trend line to predict how many pages would be in a book with 6 chapters.

Book page 247

• 100 pages

• 170 pages

• 60 pages

• 20 pages

The graph above shows a line of best fit for data collected on the amount earned by waiters and waitresses last week in relation to the number of tables they served. What is the equation of the line of best fit? Use the points (225,750) and (0,375)

Book page 249

• y = (5/3) x + 375

• y = (1/3) x + 475

• y = (5/3) x + 475

• y = (1/3) x + 375

Are these inverse functions?

Book page 267

• yes

• no

• no way to tell

What is the inverse of the function f(x) = 2x-5

Book page 267

• f⁻¹(x) = ½x+5

• f⁻¹(x) = ½x+⁵/₂

• f⁻¹(x) = x+⁵/₂

• f⁻¹(x) = ½x-⁵/₂