Finding Y-Intercept from Two Points

A line passes through the coordinates (5,1) and (10,3). What is the y-intercept of this line?

• b = -2

• b = -1

• b = 1

• b = 2

Answer explanation

To find the y-intercept, insert the value for slope in for m and one of the coordinates in for x and y. Use the equation y = mx + b and solve for b. 

Tags

CCSS.8.EE.B.6

CCSS.8.F.A.3

A line passes through the coordinates (4,5) and (6,2). What is the y-intercept of this line?

• b = -12

• b = -6

• b = 11

• b = 12

Answer explanation

To find the y-intercept, insert the value for slope in for m and one of the coordinates in for x and y. Use the equation y = mx + b and solve for b. 

What is the y-intercept for the function that passes through the points (24, 28) and (8, 8)?

A line passes through the coordinates (0,1) and (4,3). What is the y-intercept of this line?

• b = 1/2

• b = 1

• b = 2

• b = 4

Answer explanation

To find the y-intercept, insert the value for slope in for m and one of the coordinates in for x and y. Use the equation y = mx + b and solve for b. 

Tags

CCSS.8.EE.B.6

CCSS.8.F.A.3

A line passes through the coordinates (6,4) and (3,2). What is the y-intercept of this line?

• b = 0

• b = 2

• b = 4

• b = 6

Answer explanation

To find the y-intercept, insert the value for slope in for m and one of the coordinates in for x and y. Use the equation y = mx + b and solve for b. 

Tags

CCSS.8.EE.B.6

CCSS.8.F.A.3

Find the slope and y-intecept of (-3,-8) and (2, 7)

Slope is ​ (a)   and the y-intercept is ​ ​ (b)   .

• 1
• -1/5
• -1
• 3

Tags

CCSS.8.EE.B.5

A line passes through the coordinates (4,3) and (8,1). What is the y-intercept of this line?

• b = -5

• b = -2

• b = 2

• b = 5

Answer explanation

To find the y-intercept, insert the value for slope in for m and one of the coordinates in for x and y. Use the equation y = mx + b and solve for b. 

Tags

CCSS.8.EE.B.6

CCSS.8.F.A.3

Write the y-intercept for the function that passes through the points (−2, 6) and (2, 7). Change it to a decimal.

A line passes through the coordinates (1,3) and (2,4). What is the y-intercept of this line?

• b = 1/2

• b = 1

• b = 2

• b = 4

Answer explanation

To find the y-intercept, insert the value for slope in for m and one of the coordinates in for x and y. Use the equation y = mx + b and solve for b. 

Tags

CCSS.8.EE.B.6

CCSS.8.F.A.3

Find the slope and y-intecept of (1, 6) and (2, 5). Slope is ​ (a)   and the y-intercept is ​ (b)   .

• -1

• 7

• 1

• -5

• 6

Tags

CCSS.8.EE.B.5