B){x<−3y≤−x+1
C){x≤−3y≤−x−3
D){x<−3y≤−x−1
2)Which system of linear inequalities is graphed?
A) {y≤2x+1x+y≥−2
B) {y≥2x+1x+y≤−2
C) {y<2x+1x+y>−2
D) {y>2x+1x+y<−2
Answer:
1 ) D
2 ) D
Step-by-step explanation:
The general form of the straight line is given by y=mx+c, where m is the slope and c is y-intercept.
1 ) According to the graph, we get the co-ordinates (0,-1) and (-1,0).
Using these so-ordinates, we will find the equation of the line.
i.e. Slope
i.e.
i.e. m = -1
Now, substituting m and (0,-1) in general form, we get c = -1.
So, the equation of this straight line is y = -x-1.
We will now use 'Zero Test' i.e. substitute (0,0) in the required equation and since the given regions are away from the origin, this pair of points will not satisfy the equation.
So, we get y < -x-1 and as the region is given to less than x= -3.
Hence, option D is correct.
2) Now, according to the second graph, we get the points (0,-2), (-2,0) and (0,1), (-1,-1) for two lines respectively.
Solving as in 1) we get that the equations of the lines are given by x+y = -2 and y = 2x+1 respectively.
Again using 'Zero Test', we see that these pair of points does not satisfy the equations.
So, we get x+y < -2 and y > 2x+1.
Hence, option D is correct.
Answer: C and B
Step-by-step explanation:
Answer:
The coordinates of point C are (-8,5).
Step-by-step explanation:
It is given that A, B and C collinear and B is between A and C.
The ratio of AB to BC is 1:2. It means Point divided the line segments AC in 1:2.
Section formula:
The given points are A(7,-1) and B(2,1).
Let the coordinates of C are (a,b).
Using section formula the coordinates of B are
We know that point B(2,1).
On comparing both sides we get
The value of a is -8.
The value of b is 5.
Therefore, the coordinates of point C are (-8,5).
The coordinates of the pointC such that pointsA and B are (7, -1) and (2, 1) and the ratioAB to BC is 1 : 2 is (-8, 5).
According to the Euclidean geometry, a line is formed by two points on a plane and three points are collinear if all the three points go through a single line.
By definitions of vector and ratio we derive an expression to determine the coordinates of the point B:
If we know that A(x,y) = (7, -1) and B(x,y) = (2, 1), then the coordinates of point C is:
C(x, y) = 3 · (2, 1) - 2 · (7, -1)
C(x, y) = (6, 3) + (- 14, 2)
C(x,y) = (- 8, 5)
The coordinates of the pointC such that pointsA and B are (7, -1) and (2, 1) and the ratioAB to BC is 1 : 2 is (-8, 5).
The statement is poorly formatted and reports mistakes. Correct form is shown below:
A, B and C are collinear and B is between A and C. The ratio of AB to BC is 1 : 2. If A is A(x, y) = (7, -1) and B(x, y) = (2, 1), what are the coordinates of point C?
To learn more on line segments, we kindly invite to check this verified question: brainly.com/question/25727583
If G, who bought a family income policy with a 20 years rider at age 40, dies at age 50, his family would continue to receive income for another 10 years, which is the remaining period of the policy.
The question refers to a family income policy, which is a type of life insurance. In this situation, G bought a policy at the age of 40 which includes a term life insurance policy and a decreasing term rider of 20 years. If G were to die at age 50, the remaining term of the rider would dictate how much longer the family receives income. As G has held the policy for 10 years, there would be another 10 years remaining on the policy. Therefore, G's family would continue to receive an income for an additional 10 years after G's death.
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