Straight Line Equation Writing

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 equation of the line?

• y = -3/4x + 3

• y = 4/5x + 3

• y = -4/5x + 3

• y = -4/5x

What TWO things do you need to write a linear equation? Check both things!

• Slope

• Y-intercept

• Y - axis

• Standard form

Tags

CCSS.8.EE.B.6

CCSS.8.F.A.3

Vertical or horizontal?
x = 4

• vertical 

• horizontal

• neither

Mathematical Equivalence

ON

Write the equation of the line.

Mathematical Equivalence

ON

Mathematical Equivalence

ON

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)

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

What is the equation of the line shown in the graph?

• y = 0

• y = 1

• y = 2

• x = 1