Graphing Equations of Lines: Part 2

In this video, Mr. Back Work explains how to graph equations of lines. The tutorial begins with graphing using the slope-intercept form, focusing on identifying the y-intercept and slope to plot the line. The video then transitions to graphing equations in standard form by finding x and y intercepts. The process involves substituting zero for one variable to solve for the intercepts, which are then used to plot the line on a graph. The video concludes with a practical example of graphing a standard form equation.

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

• 3

• -2

• 0

• 1

Tags

CCSS.8.EE.B.6

CCSS.8.F.A.3

According to the slope -2/1, what should be the movement to plot the next point from the y-intercept?

• Down 2, right 1

• Up 2, right 1

• Up 2, left 1

• Down 2, left 1

Tags

CCSS.8.EE.B.5

How do you graph the equation y = -2x + 3?

• Plot y-intercept and use slope to find next point

• Plot only the intercepts

• Plot x-intercept and use slope

• Use two random points

What does the slope -2/1 indicate in terms of movement on the graph?

• Move 2 units up for every 1 unit right

• Move 2 units down for every 1 unit left

• Move 2 units up for every 1 unit left

• Move 2 units down for every 1 unit right

Tags

CCSS.8.EE.B.5

What form is the equation 3x + 4y = 12?

• Quadratic form

• Point-slope form

• Slope-intercept form

• Standard form

How do you find the x-intercept of an equation in standard form?

• Set x to 0 and solve for y

• Set both x and y to 0

• Set y to 0 and solve for x

• Multiply x and y coefficients

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

• (0, 4)

• (4, 0)

• (3, 0)

• (0, 3)

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

• (0, 3)

• (3, 0)

• (0, 4)

• (4, 0)

Tags

CCSS.8.EE.B.6

CCSS.8.F.A.3

After setting y to 0 in the equation 3x + 4y = 12, what is the next step to find the x-intercept?

• Add 12

• Divide by 4

• Subtract 4

• Divide by 3

To find the y-intercept of 3x + 4y = 12, what value should x be set to?

• 1

• 0

• -1

• 3

Tags

CCSS.8.EE.B.6

CCSS.8.F.A.3