Question

How do you graph -4x+2y=8

Answer 1

Graph:

x

+

2

y

=

8

The x-intercept is the value of

x

when

y

=

0

. The y-intercept is the value of

y

when

x

=

0

.

To get the x-intercept, substitute

0

for

y

.

x

+

(

2

⋅

0

)

=

8

x

=

8

The x-intercept is

(

8

,

0

)

.

To get the y-intercept, substitute

0

for

x

.

0

+

2

y

=

8

2

y

=

8

Divide by

2

.

y

=

4

The y-intercept is

(

0

,

4

)

.

You now have two points on the line. You can plot them and then draw a straight line through the points.

graph{x+2y=8 [-12.55, 12.76, -5.42, 7.24]}

Answer:

The x-intercept is

(

8

,

0

)

.

The y-intercept is

(

0

,

4

)

.

Answer 2

First break down the equation so it is y by nits self on the one side so add 4x to each side so 2y=4x+8 then divide each side by 3 so Y= 2x+4 the 4 is the yintercept and the 2 in front of the x is the slope so you would graph by starting at (0,6) and draw a point 2 up and 1 over and continue to rise 2 and run 1