To identify the real number that corresponds to a point plotted on the real number line, locate the point on the number line and determine which number it represents.
To identify the real number that corresponds to a point plotted on the real number line, you need to locate the point on the number line and determine which number it represents. Each point on the number line corresponds to a unique real number.
For example, let's say a point is plotted on the number line between -5 and -4. This point would correspond to the real number -4.5 because it is exactly halfway between -5 and -4.
Using this method, you can determine the real number for any point plotted on the real number line.
#SPJ2
-4x + y = -1
A) (3,1)
B) (-1,3)
C) (-1,-3)
D) (1,3)
Hi Brainiac
-2x+y=1
-4x+y=-1
We need to solve -2x+y=1 for y
Now let's start by adding 2x to both sides
-2x+y+2x=1+2xy=2x+1
Substitute 2x+1 for y in -4x+y=-1
-4x+y=-1
-4x+2x+1=-1
-2x+1=-1
Add -1 to both sides
-2x+1-1=-1-1
-2x=-2
Now divide both sides by -2 so we can fine the value for x
-2x/-2= -2/-2
x=1
The last step is to substitute 1 for x in y=2x+1
y=2x+1
y=(2)(1)+1
y= 2+1
y= 3
Answer : D , (1,3)
Good night :)
Answer:
Step-by-step explanation:
To express "twice the difference of a number and 5" algebraically, we can follow these steps:
Step 1: Let's represent the unknown number as 'x'.
Step 2: The difference of a number and 5 is obtained by subtracting 5 from the number, which gives us 'x - 5'.
Step 3: To find "twice the difference," we multiply the difference by 2, resulting in '2(x - 5)'.
Therefore, "twice the difference of a number and 5" can be expressed algebraically as '2(x - 5)'.