Can anyone help me on question 2?

Mathematics

2 answers:

Maurinko [17]4 years ago

8 0

Answer:

Sure, I can help you with question 2.

Step-by-step explanation:

Original equation:

-3x-7y=2

Substitute x and y values

-3(4)-7(-2)=2

-12+14=2

2=2

This is true, thus (4, -2) is a solution to the given equation.

Katena32 [7]4 years ago

6 0

Answer:

yes

Step-by-step explanation:

-3x - 7y =2

Substitute the point into the equation

-3(4) -7(-2) =2

-12 +14=2

2=2

This is true so the point is a solution to the equation

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3 ≤ 4 + 3 x / 2 ≤ 2 Solve the inequality. Give the result in set notation and graph it

kati45 [8]

I have to make certain assumptions about what you mean here by your

3 ≤ 4 + 3 x / 2 ≤ 2: 3 ≤ 4 + 3x/2 ≤ 2. Is that correct or not?

If correct, let's elim. the fractions by mult. all 3 terms of this inequality by 2:

2( 3 ≤ 4 + 3x/2 ≤ 2) => 6 ≤ 8 + 3x ≤ 4

Now subtract 8 from all three terms:

6-8 ≤ 8-8 + 3x/2 ≤ 2-8, or -2 ≤ 3x ≤ 4-8, or -2 ≤ 3x ≤ -4

Isolating x: -2/3 ≤ x ≤ -4/3

There's a basic problem here: -2/3 is not ≤ -4/3.

Please double check to ensure that you have copied down the original problem exactly as it was given.

8 0

3 years ago

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Explanation

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