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nikklg [1K]
3 years ago
13

Select the correct answer from each drop-down menu.

Mathematics
2 answers:
tresset_1 [31]3 years ago
5 0

Answer:

need the test point of the graph please

Step-by-step explanation:

Ymorist [56]3 years ago
4 0

Answer:

The graph represents the system of inequalities "4 x - y is less than or equal to 4 and 2 x - 2 y is less than or equal to 3" ⇒ 1.

Step-by-step explanation:

To find the answer let us find the equation of each line

Blue line:

∵ The line passes through points (1 , 0) and (0 , -4)

- Find the slope of the line

∵ m = Δy/Δx

∴ m=\frac{0--4}{1-0}=\frac{4}{1}

∴ m = 4

- The form of the equation is y = m x  + b, where b is the

   y-intercept (value y at x = 0)

∵ y = -4 at x = 0

∴ b = -4

- Write the equation of the line

∴ y = 4 x - 4

∴ The equation of the blue line is y = 4 x - 4

- The shading is above the line and the line is solid, that means

  y is greater than or equal 4 x - 4

∴ The inequality of the blue line is y ≥ 4 x - 4

Red line:

∵ The line passes through points (1.5 , 0) and (0 , -1.5)

- Find the slope of the line

∴ m=\frac{0--1.5}{1.5-0}=\frac{1.5}{1.5}

∴ m = 1

∵ y = -1.5 at x = 0

∴ b = -1.5

- Write the equation of the line

∴ y =  x - 1.5

- Multiply the both sides by 2

∴ The equation of the red line is 2 y = 2 x - 3

- The shading is above the line and the line is solid, that means

  y is greater than or equal 2 x - 3

∴ The inequality of the red line is 2 y ≥ 2 x - 3

Let us find which answer is the same with this system of inequalities

First answer:

∵ 4 x - y ≤ 4

- Add y to both sides

∴ 4 x ≤ 4 + y

- Subtract 4 from both sides

∴ 4 x - 4 ≤ y

- That means 4 x - 4 is less than or equal y that means y

    is greater than or equal 4 x - 4

∴ y ≥ 4 x - 4 ⇒ same with first inequality above

∵ 2 x - 2 y ≤ 3

- Add 2 y to both sides

∴ 2 x ≤ 3 + 2 y

- Subtract 3 from both sides

∴ 2 x - 3 ≤ 2 y

- That means 2 x - 3 is less than or equal 2 y that means 2 y

    is greater than or equal 2 x - 3

∴ 2 y ≥ 2 x - 3 ⇒ same with second inequality above

The graph represents the system of inequalities "4 x - y is less than or equal to 4 and 2 x - 2 y is less than or equal to 3"

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A boat travels for 7 hours. if it travels 4 hours downstream and 3 hours upstream. ten t covers a distance of 116 km. but if it
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Speed = Distance / Time
Distance = Speed*Time

For this problem, we should bear in mind that current speed has an impact on the boat speed...

for upstream, the boat goes against the current, and so its speed is

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for downstream, it will be:

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Convert the problem into mathematical equations:

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Step-by-step explanation:

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