Graphing Lines in Slope-Intercept Form

The video tutorial explains how to graph lines using the slope-intercept form of an equation, y = mx + b. It covers the meaning of slope and y-intercept, and demonstrates graphing two specific lines: y = 2x - 3 and y = -4x + 2. The tutorial provides step-by-step instructions on identifying the y-intercept and using the slope to plot additional points, emphasizing the direction of the line based on the slope's sign.

What is the slope-intercept form of a linear equation?

• y = ax^2 + bx + c

• y = ax + b

• y = mx + b

• y = mx^2 + b

Tags

CCSS.8.EE.B.6

CCSS.8.F.A.3

In the equation y = 2x - 3, what is the slope?

• -3

• 3

• -2

• 2

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CCSS.8.EE.B.5

If the slope of a line is positive, in which direction does the line go?

• Down to the right

• Horizontal

• Up to the right

• Vertical

Tags

CCSS.8.EE.B.5

What does a slope of zero indicate about the line?

• The line is vertical

• The line is horizontal

• The line goes up to the right

• The line goes down to the right

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CCSS.8.EE.B.5

Where do you start graphing the line y = 2x - 3?

• At y = 2

• At x = -3

• At y = -3

• At the origin

How do you move to the next point on the line y = 2x - 3?

• Down 1, right 2

• Up 2, right 1

• Up 1, right 2

• Down 2, right 1

In the equation y = -4x + 2, what is the y-intercept?

• -2

• 2

• 4

• -4

Tags

CCSS.8.EE.B.6

CCSS.8.F.A.3

What does a negative slope indicate about the direction of the line?

• The line is vertical

• The line goes down to the right

• The line is horizontal

• The line goes up to the right

Tags

CCSS.8.EE.B.5

For the line y = -4x + 2, how do you move to the next point from the y-intercept?

• Up 1, left 4

• Down 1, right 4

• Up 4, left 1

• Down 4, right 1

What is the final step in graphing a line after plotting the points?

• Calculate the slope again

• Label the points

• Draw a straight line through the points

• Erase the points