Intro to Writing Equations

How would you write the equation with a slope of 2/3 and a y-intercept of -3

• y=3/2x+3

• y=2/3-3

• y=2/3x-3

• y=2/3x+3

Tags

CCSS.8.EE.B.6

CCSS.8.F.A.3

What is the slope and y-intercept of the following equation:

• slope = 2
  y-intercept: (0, 2/5)

• slope = 2/5
  y-intercept: (0, 2)

• slope = 2/5
  y-intercept: (2, 0)

• slope = 2
  y-intercept: (2/5, 0)

Tags

CCSS.8.EE.B.6

CCSS.8.F.A.3

What is the y-intercept?

• -4

• 6

• 4

• 0

• A

• B

• C

• D

Mathematical Equivalence

ON

What is the equation of the line with slope 3 and y-intercept 5 in slope-intercept form?

Mathematical Equivalence

ON

Tags

CCSS.8.EE.B.6

CCSS.8.F.A.3

Write an equation in slope-intercept form for a line that passes through the points (-7, 0) and (1, 8).

Mathematical Equivalence

ON

Answer explanation

1. Make a table in Desmos.

2. Underneath the table type:

y₁ ~ mx₁ + b

3. Plug in your numbers for m and b in the slope intercept form equation: y = mx + b.

In this problem, the m is 1 and b is 7.

So the correct answers are either y = 1x + 7 or y = x + 7.

Tags

A.3(C)

Mathematical Equivalence

ON

Tags

CCSS.8.F.B.4

CCSS.HSF.LE.A.2

Write the equation of the line.

Mathematical Equivalence

ON

• A

• B

• C

• D