3 years ago

2x+y=4 -2x+y=-4 Answer for this equations and inequalities problem please

1 answer:

8 0

Answer:

(2,0); x = 2; y= 0

Step-by-step explanation:

add the system and u get y = 0. substitute in the first equation and u get x = 2

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sashaice [31]

It's the slope-point formula:

$y-y_1=m(x-x_1)$

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$y-5=-\dfrac{1}{2}(x+7)$

Therefore, the slope $m=-\dfrac{1}{2}$

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blondinia [14]

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zhuklara [117]

Where is the multiply chocie answer

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kondor19780726 [428]

The answer is the last option: $\frac{1}{2}$

Explanation:

1. You have that the equation of the line is:

$y=mx+b$

Where $m$ is the slope of the line and $b$ is the intercept with the y-axis.

2. Therefore, you must find $b$ .

3. Then, you must substitute the points given in the problem and the slope into the equation of the line and solve for $b$ , as following:

$y=mx+b\\-\frac{7}{2}=(-\frac{4}{7})(7)+b\\-\frac{7}{2}=-4+b\\b=\frac{1}{2}$

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Alex Ar [27]

Edit: Bottom left is correct.

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