IXL | Find a missing coordinate using slope

A line has a slope of

–

and includes the points

(

–

)

and

(

)

What is the value of

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Learn with an example

question

A line with a slope of

–

passes through the points

(

)

and

(

–

)

What is the value of

key idea

slope

change in

solution

Take the slope formula and plug in the slope and both pairs of

(

)

coordinates. Then solve for

slope

change in

–

Plug in

–

(

)

and

(

–

)

–

Plug in

–

(

)

and

(

–

)

–

Simplify

–

Simplify

(

–

)

Multiply both sides by 2

–

Multiply both sides by 2

–

Simplify

–

Simplify

Add 5 to both sides

–

Add 5 to both sides

–

Divide both sides by

–

Divide both sides by

–

The value of

–

Looking for more? Try these:

Lesson: Slope

$Confetti$

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Now entering the Challenge Zone—are you ready?

Teacher tools

Work it out

Not feeling ready yet? These can help:

W.2Find the slope from two points

T.10Solve two-step equations

Lesson: Slope

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