Writing Equations from Two Points in Slope-Intercept Form

What is the slope of a line?

• The constant value of the line

• The point where the line crosses the y-axis

• The change in y-values divided by the change in x-values

• The point where the line crosses the x-axis

Tags

CCSS.8.EE.B.5

What is the formula for the slope of a line?

• y = mx + b

• m = y2 - y1 / x2 - x1

• m = x2 - x1 / y2 - y1

• y = b + mx

Tags

CCSS.8.EE.B.6

CCSS.8.F.A.3

In the slope-intercept form y = mx + b, what does 'b' represent?

• The y-intercept

• The change in x-values

• The x-intercept

• The slope of the line

Tags

CCSS.8.EE.B.5

Given the points (0, -2) and (4, 6), what is the slope of the line?

• 1

• 2

• 4

• 8

Tags

CCSS.8.EE.B.6

CCSS.8.F.A.3

What is the y-intercept of the line passing through the points (0, -2) and (4, 6)?

• -2

• 0

• 2

• 6

What is the equation of the line passing through the points (0, -2) and (4, 6)?

• y = -2x - 2

• y = 2x + 2

• y = 2x - 2

• y = -2x + 2

Tags

CCSS.8.EE.B.5

Given the points (-1, 4) and (5, 11), what is the slope of the line?

• 5

• 6/7

• 7/6

• 1

Tags

CCSS.8.EE.B.6

CCSS.8.F.A.3

If the slope of a line is 7/6 and it passes through the point (5, 11), what is the y-intercept?

• 5

• 7

• 6

• 5 1/6

What is the final equation of the line passing through the points (-1, 4) and (5, 11)?

• y = 7/6x - 5 1/6

• y = 6/7x + 5 1/6

• y = 7/6x + 5

• y = 7/6x + 5 1/6

Why is it sometimes necessary to use algebra to find the y-intercept?

• Because neither point is the y-intercept

• Because the points do not lie on the x-axis

• Because the slope is not given

• Because the points are too close together