Answer: No. Quincy should have used the trend line to find the corresponding x value when y=80.
Answer:
(1.2, –4.7)
Step-by-step explanation:
Since in the question it is mentioned that on the plane of coordinate, a line is made from point A (7,-2) to point B(-8,-9)
Also, the ratio of A to B is 5:8
Based on this, the x and y coordinates at point C is
![= [\frac{5\times (-8) + 8\times 7}{5 + 8} , \frac{5\times (-9) + 8\times -2}{5 + 8}]\\\\= [\frac{16}{3}, \frac{-61}{13}]](https://tex.z-dn.net/?f=%3D%20%5B%5Cfrac%7B5%5Ctimes%20%28-8%29%20%2B%208%5Ctimes%207%7D%7B5%20%2B%208%7D%20%2C%20%5Cfrac%7B5%5Ctimes%20%28-9%29%20%2B%208%5Ctimes%20-2%7D%7B5%20%2B%208%7D%5D%5C%5C%5C%5C%3D%20%5B%5Cfrac%7B16%7D%7B3%7D%2C%20%5Cfrac%7B-61%7D%7B13%7D%5D)
= (1.2, –4.7)
Hence, the x and y coordinates of point C is (1.2, –4.7)
Therefore the last option is correct
Answer:
120 inches
Step-by-step explanation:
4. 3x + 2y = 6
x-intercept = 2 , y - intercept = 3
5. 4x – 9y = 36
x-intercept = 9, y - intercept = -4
6. x + y = -3
x-intercept = -3, y - intercept = -3
8. x - 3y = 12
x-intercept = 12, y - intercept = -4
Step-by-step explanation:
To find the x-intercept we put y=0 in the equation and to find the y-intercept we put x = 0 in the equation
<u>4. 3x + 2y = 6</u>
Putting y = 0

Putting x=0

<u>5. 4x – 9y = 36</u>
Putting y = 0

Putting x=0

<u>6. x + y = -3</u>
Putting y = 0

Putting x=0

<u>8. X - 3y = 12</u>
Putting y=0

Putting x = 0

Keywords: Linear equation
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Answer:
The answer is 113
Step-by-step explanation:
6^2 + 7(3^2 + 8 - 6)
36 + 7(9 + 8 - 6)
36 + 7(11)
36 + 77
113