Linear Functions Unit Review

Which of the following is NOT true about the graph of the line
y + 4 = -5(x - 1)

• It goes through the point (-4, 1)

• It has a slope of -5

• The equation is in point-slope form

• It goes through the point (4, -1)

perpendicular lines have what kind of slopes?

• same

• opposite/reciprocals

• opposites

• reciprocals

Does the following equation represent a vertical line, a horizontal line, or neither?

y = −3

• vertical

• horizontal

• neither

Write an equation for a line perpendicular to
y = -5x + 3 through (-5, -4)

• y = -3x + 1/5

• y = -3x - 1/5

• y = 1/5x - 3

• y = -1/5x - 3

What is the x-intercept of 2x + 4y - 14 = 0?

Write the following equation in slope-intercept form:
4x - 3y - 12 = 0

A sign says that 3 tickets cost $22.50 and that 7 tickets cost $52.50. Which equations in point-slope form would represents the cost of tickets? Select all that apply.

• y - 22.50 = 7.50(x - 3)

• y - 52.50 = 7.50(x - 7)

• y = 7.50x

• y + 22.50 = 7.50(x + 3)

Which of the following lines represents the line of best fit for the scatter plot?

• A

• B

• C

• D

Describe this scatter plot

• Stong positive correlation

• Weak positive correlation

• Strong negative correlation

• Weak negative correlation

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 19 chapters. 

• 150 pages

• 170 pages

• 190 pages

• 210 pages