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gladu [14]
3 years ago
7

Graph the linear equation and answer each of the following questions. y=-2x-3

Mathematics
1 answer:
ollegr [7]3 years ago
4 0

Answer:

Part 1) The y-intercept is the point (0,-3)

Part 2) The slope in fraction form is m=-\frac{2}{1}

Part 3) The graph in the attached figure

Step-by-step explanation:

we have

y=-2x-3

Part 1) What is the y-intercept?

Remember that

The y-intercept is the value of y when the value of x is equal to zero

so

For x=0

substitute in the linear equation and solve for y

y=-2(0)-3\\y=-3

The y-intercept is the point (0,-3)

Part 2) What is the slope (in fraction form)?

we have

y=-2x-3

This is the equation of the line in slope intercept form

y=mx+b

where

m is the slope or unit rate

b is the y-intercept

so

m=-2

In fraction form is

m=-\frac{2}{1}

The slope is negative, that means, is a decreasing function (as the x-values increases the y-values decreases)

Part 3) Graph the line

To graph the line we need two points

From the y-intercept (0,-3) use the slope to find your next point

The slope is -2, so you will rise -2 (2 units down) and run 1 (1 unit to the right).

The next point is (0+1,-3-2) -----> (1,-5)

so

Plot the points (0,-3) and (1,-5), connect them and graph the line

The graph in the attached figure

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