Double the sum of a number and three is the same as the number subtracted by nine
1 answer:
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<h2>Hello!</h2>
The answer is:
The correct option is the first option:
To write the equation of the line in slope-interception form we need to extract all the information that we need from the graphic.
We must remember that the slope-interception form of the lines is:
Where,
y, is the function
m, is the slope of the line
x, is the variable
b, is the y-axis intercept
We can find the slope using the following formula:
Which is for this case:
As we can see from the graphic, the line is decresing, so the sign of the slope "m" will be negative, so:
We can find the value of "b" seeing where the line intercepts the y-axis.
As we can see it intercept the y-axis at:
Then, now that we already know the value of "m" and "b", we can write the equation of the line:
So, the correct option is the first option:
Have a nice day!
Hola!
x = 7 , x = -7
Explicación:
Comienza restando 15 en cada lado:
Usted obtiene:
Ahora divide ambos lados por 2:
Usted obtiene:
Como la ecuación está al cuadrado, tendrás que hacer:
que te da:
Entonces: