Answer:
-42
Step-by-step explanation:
1. 4(-2)
2. 3(-8)
3. -8 + -10 + -24
4. cobine like terms
5. -42
The answer is -8 I know this as well as
Answer:
z=-8 and z=8
Step-by-step explanation:
A rational expression is undefined when its denominator is equal to zero, so our expression is undefined when
. Solving for z, we get
![z^2=64\\\sqrt{z^2}=\pm\sqrt{64}\\ z=\pm8](https://tex.z-dn.net/?f=z%5E2%3D64%5C%5C%5Csqrt%7Bz%5E2%7D%3D%5Cpm%5Csqrt%7B64%7D%5C%5C%20z%3D%5Cpm8)
Answer:
Step-by-step explanation:
Answer:
To find the value of y from a given value of x, find the position of x on the x-axis, then trace vertically until you meet the line. Once you meet the line, trace horizontally to the y-axis to find the corresponding value of y.
To find the value of x from a given value of y, find the position of y on the y-axis, then trace horizontally until you meet the line. Once you meet the line, trace vertically to the x-axis to find the corresponding value of x.
From inspection of the graph,
when x = 1, y = -1
when x = 0, y = 2
when x = 2, y = -4
Therefore,
![\begin{array}{| c | c |}\cline{1-2} x & y\\\cline{1-2} 1 & -1 \\\cline{1-2} 0 & 2 \\\cline{1-2} 2 & -4 \\\cline{1-2}\end{array}](https://tex.z-dn.net/?f=%5Cbegin%7Barray%7D%7B%7C%20c%20%7C%20c%20%7C%7D%5Ccline%7B1-2%7D%20x%20%26%20y%5C%5C%5Ccline%7B1-2%7D%201%20%26%20-1%20%5C%5C%5Ccline%7B1-2%7D%200%20%26%202%20%5C%5C%5Ccline%7B1-2%7D%202%20%26%20-4%20%5C%5C%5Ccline%7B1-2%7D%5Cend%7Barray%7D)
To find the equation of the line, find the slope:
![\sf slope\:(m)=\dfrac{change\:in\:y}{change\:in\:x}=\dfrac{2-(-1)}{0-1}=-3](https://tex.z-dn.net/?f=%5Csf%20slope%5C%3A%28m%29%3D%5Cdfrac%7Bchange%5C%3Ain%5C%3Ay%7D%7Bchange%5C%3Ain%5C%3Ax%7D%3D%5Cdfrac%7B2-%28-1%29%7D%7B0-1%7D%3D-3)
Then use one of the points and the found slope with the point-slope form of a linear equation: ![y-y_1=m(x-x_1)](https://tex.z-dn.net/?f=y-y_1%3Dm%28x-x_1%29)
![\implies y-2=-3(x-0)](https://tex.z-dn.net/?f=%5Cimplies%20y-2%3D-3%28x-0%29)
![\implies y=-3x+2](https://tex.z-dn.net/?f=%5Cimplies%20y%3D-3x%2B2)
So the equation of this line is: ![y=-3x+2](https://tex.z-dn.net/?f=y%3D-3x%2B2)