Graphing Lines Using Intercepts in Algebra 1

The video tutorial covers graphing lines using x and y intercepts. It begins with an introduction to intercepts, explaining how to identify and define them. The tutorial then explores different types of lines, including positive, negative, and zero slope lines. It demonstrates how to graph lines using intercepts and introduces the standard form equation for finding intercepts. The tutorial concludes with a real-world application problem, illustrating the practical use of intercepts in graphing.

What is an x-intercept?

• The lowest point on the graph

• The point where the line crosses the y-axis

• The point where the line crosses the x-axis

• The highest point on the graph

What is the y-intercept of a line that crosses the y-axis at -3?

• (-3, 0)

• (0, -3)

• (3, 0)

• (0, 3)

If a line crosses the x-axis at -1.5, what is the x-intercept?

• (0, -1.5)

• (0, 1.5)

• (-1.5, 0)

• (1.5, 0)

What type of line is it if it goes uphill from left to right?

• Undefined

• Negative

• Positive

• Zero slope

What type of line is it if it goes downhill from left to right?

• Negative

• Positive

• Zero slope

• Undefined

What is the slope of a flat line?

• Positive

• Zero

• Undefined

• Negative

What is the x-intercept of the line with the equation 2x + 3y = 6?

• 0

• 6

• 3

• 2

What is the y-intercept of the line with the equation 2x + 3y = 6?

• 0

• 6

• 2

• 3

What is the x-intercept of the line with the equation 4x - 3y = -12?

• -3

• -4

• 4

• 3

In the Facebook friends example, what does the y-intercept represent?

• The total number of friends lost

• The number of friends at day 0

• The number of friends at day 19

• The rate of losing friends