Equations of Straight Lines

Select the correct graph for:

2x + y = 2

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Select the equation of each graph shown:

• y = 2x - 2

• y = 2x + 1

• 2x + y = -2

• x + 2y = -2

Tags

CCSS.8.EE.C.8B

Select the equation of each graph shown:

• y = 0.5x - 2

• y = 2x - 2

• 2x + y = 3

• 3x + y = 2

Select the equation of each graph shown:

• x + y = 2

• y = 2x - 2

• x + y = -2

• y = x + 2

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.EE.B.6

CCSS.8.F.A.3

What is the equation in standard form of the line that passes through the point (6, -1) and is parallel to the line 8x+3y=15?

• 8x+3y=-45

• 8x+3y=10

• 8x-3y=45

• 8x-3y=10

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

Mathematical Equivalence

ON