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FromTheMoon [43]
3 years ago
13

3. Which of the following does NOT represent a

Mathematics
1 answer:
Karolina [17]3 years ago
8 0

Answer:

The second set.

Step-by-step explanation:

Consider the first set of ordered pairs.

For an increase of 9 is the x-values the y values increases by 1.

In the case of the second set the increase in y values compared with increase in y values is different:

x = 2-0 = 2, y = 10- 0 = 10. That is 5 units of y  for every unit of x.

x = 5-2 = 3, y = 13-10 = 3. That is 1 unit of y for every 1 unit of x.

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How would you limit the domain to make this function one to one f(x)=5-x^2
Maksim231197 [3]

Answer:

  choose x ≥ 0 or x ≤ 0

Step-by-step explanation:

The vertex of the parabola is at x=0. If values of x are included from both sides of the vertex, the function will not pass the horizontal line test. So, the domain must be limited so that it does not include both positive and negative values of x.

The domain could be x ≥ 0, or x ≤ 0, or some subset of either of these intervals.

8 0
3 years ago
John weighs three times as much as Karen. Two times John's weight plus Karen's weight is 875 pounds. How much does John weigh? H
Leokris [45]

Answer:

John- 375

Karen- 125

Step-by-step explanation:

Answer 1...

j =3k

2j + k = 875

substituting the first eqn into the 2nd

2(3k) + k = 875

6k+ k =875

7k = 875

k =875/7 =125

thus j = 3(125) =375

3 0
3 years ago
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andrezito [222]

Answer:

Eat some mc donolds then ur good

Step-by-step explanation:

3 0
3 years ago
What is an equation of the line that passing through the points (-2, -5) and (4, 7) ?
monitta

Answer:

y=2x-1

Step-by-step explanation:

Use the slope-intercept formula: y=mx+b where m is slope and b the y-intercept.

(-2,-5)(4,7)

Use the slope formula for when you have two points:

\frac{y(2)-y(1)}{x(2)-x(1)}=\frac{rise}{run}

Rise over run is the change in the y-axis over the change in the x-axis. Insert values:

\frac{7-(-5)}{4-(-2)}

Simplify parentheses (negative+negative=positive)

\frac{7+5}{4+2}

Simplify

\frac{12}{6}=2

2 is the slope:

y=2x+b

Now use one of the points to find the y-intercept by substituting the x and y values into the equation. Solve for b:

(4,7)

y=2x+b\\7=2(4)+b

7=8+b\\7-8=8-8+b\\7-8=b\\-1=b\\b=-1

The y-intercept is -1. Insert into the equation. Change the + symbol to -:

y=2x-1

Done.

6 0
3 years ago
(4x²+x) - (x²+2x)<br>I need help please​
Alex
The answer is 3x-x :)

You just simplify the expression, (4x^2-x^2) - (x- (-2x))
5 0
3 years ago
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