Match the equation with it's graph -4×-2y=8
1 answer:
The equation given is: -4x - 2y = 8
we will reorder the equation to in the form of y = mx + c
-4x - 2y = 8
-4x -8 = 2y
y = -2x -4
Now, we will need to generate some points that belong to the graph in order to be able to draw the line.
To do this , we will assume values for x, substitute with these values in the equation and then get the corresponding y.
Doing this, these points will be generated:
(-5,6)
(-4,4)
(-3,2)
(-2,0)
(-1,-2)
(0,-4)
(1,-6)
(2,-8)
(3,-10)
(4,-12)
(5,-14)
Plotting these order pairs on the graph will generate the line shown in the attached image.
Hope this helps :D
we will reorder the equation to in the form of y = mx + c
-4x - 2y = 8
-4x -8 = 2y
y = -2x -4
Now, we will need to generate some points that belong to the graph in order to be able to draw the line.
To do this , we will assume values for x, substitute with these values in the equation and then get the corresponding y.
Doing this, these points will be generated:
(-5,6)
(-4,4)
(-3,2)
(-2,0)
(-1,-2)
(0,-4)
(1,-6)
(2,-8)
(3,-10)
(4,-12)
(5,-14)
Plotting these order pairs on the graph will generate the line shown in the attached image.
Hope this helps :D
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<h3>Answer: Choice D</h3>
======================================================
Explanation:
The inequality sign has an "or equal to", which means the boundary line will be solid. We can rule out choices B and C because they have dashed boundary lines.
A solid boundary line means that points on the boundary are part of the solution set.
Now let's see what happens when we plug in a point like (x,y) = (4,0). This will tell us how to shade the blue region.
This is false because -20 is not larger than -1. It's the other way around.
This tells us the point (4,0) is not in the blue shaded region, and it's not on the boundary line either. We can rule out choice A because of this.
The only thing left is choice D, which is the final answer. I recommend plugging a point from this region into the inequality to confirm we have a true statement.