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3 years ago

Use intercepts to graph the line described by the equations-2x-4y=8

1 answer:

8 0

-- The x-intercept is the point where the line crosses the x-axis.
So y=0 there.

 -2x - 4y = 8
 -2x - 4(0) = 8
 -2x = 8

Divide each side by -2 : x = -4 => the x-intercept is (-4, 0)

-- The y-intercept is the point where the line crosses the y-axis.
So x=0 there.

 -2x - 4y = 8
 -2(0) - 4y = 8
 -4y = 8

Divide each side by -4 : y = -2 => the y-intercept is (0, -2)

Now you have two points on the graph ... the points where the line crosses each axis.

Mark little dots at both points, then lay your ruler across both dots, and draw
the line along the edge of the ruler, as far as you want to in both directions.

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Step-by-step explanation:

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in 1900, greenville had a population of 4000 people. Greenville's population increased by 100 people each year. Springfield had

jasenka [17]

Answer: year 1948

Step-by-step explanation:

1900 is our t = 0

The population of Greenville can be written as:

G = 4000 + 100*t

the equation for Springfield can be written as:

S = 1000*(1.04)^t

we want to find the value of t that makes S(t) = G(t)

4000 + 100*t = 1000*(1.04)^t

(4000 + 100*t) = 1.04^t

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4 = 1.04^t - 0.1*t

You will find that the correct value is t = 48

So we can assume that in year 1948 the populations will be about the same.

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