430,228 views
10 votes
10 votes
Wich is an equetion of the line that passes through the points (4,2) and (0,-1)

User Ayanami
by
2.7k points

1 Answer

13 votes
13 votes

Answer:

y

=

2

x

1

Step-by-step explanation:

First, we need to determine the slope of the line. The formula for determining the slope of a line is:

m

=

y

2

y

1

x

2

x

1

where

m

is the slope and the x and y terms are for the points:

(

x

1

,

y

1

)

and

(

x

2

,

y

2

)

For this problem the slope is:

m

=

3

1

2

0

m

=

3

+

1

2

m

=

4

2

m

=

2

Now, selecting one of the points we can use the point slope formula to find the equation.

The point slope formula is:

y

y

1

=

m

(

x

x

1

)

Substituting one of our points gives:

y

1

=

2

(

x

0

)

y

+

1

=

2

x

Solving for

y

to put this in standard form gives:

y

+

1

1

=

2

x

1

y

+

0

=

2

x

1

y

=

2

x

1

User Jared Pochtar
by
3.3k points
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