Answer: -8.66666666667
Step-by-step explanation: Do it step by step. So 19+7= 26
Then 2-5= 3
So 26 divided by -3 = -8.66666666667
Isolate one variable in the system of equations. Use substitution to create a one-variable equation. Then, set the quadratic equation equal to zero and find the discriminant. If the discriminant is negative, then there are no real number solutions. If the discriminant is zero, then there is one real number solution. If the discriminant is positive, then there are two real number solutions.
Answer:
![\:\mathrm{First\: problem:\:}-2,\\\:\mathrm{Second\: problem:\: }-3](https://tex.z-dn.net/?f=%5C%3A%5Cmathrm%7BFirst%5C%3A%20problem%3A%5C%3A%7D-2%2C%5C%5C%5C%3A%5Cmathrm%7BSecond%5C%3A%20problem%3A%5C%3A%20%7D-3)
Step-by-step explanation:
The slope of a line passing through points
and
is:
![m=\frac{\Delta y}{\Delta x}=\frac{y_2-y_1}{x_2-x_1}](https://tex.z-dn.net/?f=m%3D%5Cfrac%7B%5CDelta%20y%7D%7B%5CDelta%20x%7D%3D%5Cfrac%7By_2-y_1%7D%7Bx_2-x_1%7D)
Plugging in any two points in the table we have:
<u>First problem:</u>
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<u>Second problem:</u>
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