Using the slope and the y-intercept, graph the line represented by the following equation. then select the correct graph. 2y + 4 = 0

A line parallel to x axis and passing through (0,-2)

Step-by-step explanation:

Let us see the slope intercept form of a linear equation.

It is given as

y=mx+c

Our equation is

2y+4=0

Or 2y+0*x+4=0

2y=0*x-4

Dividing each term by 2 we get

y=0*x-2

Comparing it with

y=mx+c

m=0, that is slope of line is 0, or we can say that the line is parallel to x axis.

Also

c=-2

That means this line intersect at (0,-2) on y axis.

Hence it is a line parallel to x axis and intersecting y axis at (0,-2)

  about 5.6 days

step-by-step explanation:

we can fill the given information into the decay equation and solve for the value of t at which half the sample remains.

the half-life is about 5.6 days.

add all the numbers and check the ones place.

the answer is 486. as the ones place is more than 4, the estimation will be the next 10 ie, 490