Question

Guided Practice

Write an equation of a line with the given slope and y-intercept.


m = –1, b = –6


A.
y = x + 6


B.
y = –6x – 1


C.
y = –x – 6

Answer 1

C.

y = –x – 6

Explanation:

Use the slope-intercept form

y

=

m

x

+

b

to find the slope

m

and y-intercept

b

.

Slope:

5

3

y-intercept:

( 0 , − 2 )

Write in slope-intercept form,

y = m x + b . y = 5 /3 x − 2

Graph the line using the slope and y-intercept, or two points.

Slope:

5

3

y-intercept:

(

0

,

−

2

)

x

y

0

−

2

3

3

Use the slope-intercept form

y

=

m

x

+

b

to find the slope

m

.

m

=

5

3

Use the slope-intercept form to find the slope and y-intercept.

Slope:

1

y-intercept:

( 0 , 6 )

Use the slope-intercept form to find the slope and y-intercept.

Slope:

−

6

y-intercept:

( 0 , − 1 )

Use the slope-intercept form to find the slope and y-intercept.

Slope:

−

1

y-intercept:

( 0 , − 6 )