Concepts in Slope

What is the formula to calculate the slope of a line?

• (y2 - y1) / (x2 - x1)

• x2 - x1 / y2 - y1

• y2 - y1 * x2 - x1

• 2y - 2x / 2

What does a slope of 0 indicate about a line?

• The line has a positive slope

• The line is vertical

• The line is horizontal

• The line is curved

If the slope of a line is undefined, what does it mean?

• The line is vertical

• The line is horizontal

• The line has a positive slope

• The line has a negative slope

How do you find the slope of a line given two points on it?

• (y2 - y1) / (x2 - x1)

• x1 - x2 / y1 - y2

• x2 - x1 / y2 - y1

• y1 - y2 / x1 - x2

What is the slope of the line, in the standard (x,y) coordinate plane, that is parallel to x + 5y = 9 ?

• -5

• -1/5

• 1/5

• 9/5

• 9

A line is perpendicular to    -2x+y = - 7.
What is the slope of this line? 

• -2

• 1/2

• -1/2

• 2

What is the slope of a line containing the points (-2, 5) and (3, 1)?

Answer explanation

Spreadsheet

What is the slope of a line containing the points (-2, 5) and (3, 1)? HINT: Create a table using DESMOS

Which statement best describes "m"?

• x- intercept

• y - intercept

• slope

• bee

A line is perpendicular to    y = 2x - 7.
What is the slope of this line? 

• -2

• 1/2

• -1/2

• 2