Construct a Linear Function from Two Points

Find the equation for the line through the points (4,10) and (12,16). Step 1: Find slope using the slope formula

Check 2: Find the equation for the line through the points (4,10) and (12,16). Step 2: Find the y-intercept (b)

• b = 13

• b = 30

• b = 7

• m = 37

Summarize the steps in finding the equation of a line through two points.

Find the slope of the line that passes through the points (10, 1) and (5, 2).

• 5

• -5

Tags

CCSS.8.EE.B.5

Find the slope of the line that passes through the points (2, 3) and (5, 11).

• 2

• 3

Tags

CCSS.8.F.B.4

Construct a function to model a linear relationship between two quantities. If a plant grows 3 cm every day and starts at 5 cm, what is the equation of the function in slope-intercept form?

Tags

CCSS.8.F.B.4

CCSS.HSF.LE.A.2

Write an equation for the line that represents Penelope's distance, y, from soccer practice after x minutes. Use y = mx + b.

• y = -110x + 2480

• y = 110x + 2000

• y = -110x +2040

• y = 5x +1930

Tags

CCSS.8.F.B.4

CCSS.HSF.LE.A.2

Construct a linear function from the points (1, 2) and (3, 6).

• y = 2x

• y = 3x - 1

• y = 4x - 2

• y = x + 2

Tags

CCSS.8.F.B.4

CCSS.HSF.LE.A.2

Identify the function from the table: x | y 1 | 2 2 | 4 3 | 6

• y = 2x

• y = x + 1

• y = x^2

• y = 3x

Tags

CCSS.8.F.B.4

CCSS.HSF.LE.A.2

Identify the function represented by the table: x | y 0 | 1 1 | 3 2 | 5.

• y = 2x - 1

• y = 3x + 1

• y = 2x + 1

• y = x + 1

Tags

CCSS.8.F.B.4

CCSS.HSF.LE.A.2