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ziro4ka [17]
3 years ago
11

Can this linear system be solved by subtracting one of the original equations from the other? Why or why not

Mathematics
1 answer:
Citrus2011 [14]3 years ago
6 0
Can you show the information?
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Solve for y: 18x + 3y = 24​
Sidana [21]

Answer: y=8-6x

Step-by-step explanation:

8 0
3 years ago
A line has y intercept -6 and a x-intercept - 12. what is the equation of the line
koban [17]

Answer:

\boxed{y = -\dfrac{1}{2}x-6}}

Step-by-step explanation:

The equation for a straight line is

y = mx + b

where m is the slope of the line and b is the y-intercept.

The line passes through the points (-12, 0) and (0, 6)

(a) Calculate the slope of the line

\begin{array}{rcl}m & =&\dfrac{y_{2} - y_{1}}{x_{2} - x_{1}}\\\\ & = &\dfrac{6 - 0 }{0 - (-12)}\\\\& = &\dfrac{6}{-12}\\\\& = & -\dfrac{1}{2}\\\end{array}

(b) Write the equation

The y-intercept is at x = -6.

\text{The equation for the line is $\boxed{\mathbf{y = -\dfrac{1}{2}x-6}}$}

The diagram shows the graph of the line passing through the two intercepts.

5 0
3 years ago
If f(x) = 2x and g(x) = sqrt x,what is the domain of (fog)(x)?<br> HELP
yaroslaw [1]

Bro i need major help right now too but um idek what to do but good luck

5 0
3 years ago
Write an equation of the lines passes through (4,1) and is parallel to y= -2x+7
Nastasia [14]

Answer:

y = -2x + 9

Step-by-step explanation:

The parallel line has an equation of y = -2x + 7;

And its slope is -2.

The slope of the line that passes through (4,1) is also -2 since parallel lines have the same slope.

Taking another point (x,y) on the line that passes through (4,1):

slope(m) = change in y ÷ change in x

-2 = \frac{y - 1}{x - 4}

Cross multiplying gives;

y - 1 = -2x + 8

y = -2x + 9

5 0
3 years ago
10=2/3n+8<br>what is n ?​
alexira [117]

The value of n in the given equation is -2.6

Step-by-step explanation:

Given,

10 = \frac{2}{3n+8}

To find the value of n

10 = \frac{2}{3n+8}

or, 10(3n+8) = 2 [ by cross multiplication]

or, 30n + 80 = 2

or, 30n = 2-80 [ taking the constant values in one side]

or, 30n = -78

or, n = \frac{-78}{30}

or, n = -2.6

8 0
3 years ago
Read 2 more answers
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