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artcher [175]
2 years ago
14

Which function matches the table? Helppp

Mathematics
1 answer:
Brut [27]2 years ago
5 0

Answer:

C. f(x) = 2x² - 1.

Step-by-step explanation:

Using any of the given pair, slot in the values of the pair into each function given to find out if it would satisfy the equation.

Let's use (1, 1).

Option A: f(x) = 2x - 1:

Substitute x = 1 and f(x) = 1 into the function

1 = 2(1) - 1

1 = 2 - 1

1 = 1 (this is true).

However, let's try this using another given pair, (2, 7) to confirm if the function matches the table.

Substitute x = 2 and f(x) = 7 into f(x) = 2x - 1

7 = 2(2) - 1

7 = 4 - 1

7 = 3 (this is not true). Therefore the function doesn't match.

✔️Let's check option C: f(x) = 2x² - 1.

Substitute x = 1, and f(x) = 1 into the function

1 = 2(1)² - 1

1 = 2 - 1

1 = 1 (true)

Try another pair, say (2, 7):

Substitute x = 2 and f(x) = 7 into f(x) = 2x² - 1

7 = 2(2)² - 1

7 = 2*4 - 1

7 = 8 - 1

7 = 7 (true).

Therefore, C. is the correct answer.

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3 years ago
Help 8th grade math need answers quick
stepladder [879]

Answer:

A few examples:

0. 0

1. Undefined

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8. 5/2

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Learn how to find the slope below for the other problems.

Step-by-step explanation:

Slope is the rate of change for a linear function. It is found by subtracting the y values of two point on the line and dividing that difference by the difference of the x values of the points.

It can also be found using the formula y=mx+b known as the slope intercept form.

Here are a few examples:

0. This is a horizontal line which always has slope 0.

1. This is a vertical line which always has slope undefined.

2. Find two points that cross through a grid line intersection The line appears to cross them at (5,3) and (0,6). Count the unit squares between the two by counting up 3 and over to the left 5. Because it is left it is negative. The slope is -3/5

3. To find the slope, use the slope formula:

\frac{y_2-y_1}{x_2-x_1}=\frac{6--4}{-2--2}=\frac{6+4}{-2+2}=\frac{10}{0}=undefined

Since we can't divide by 0, it is undefined.

7. y=493x-257 follows the formula y=mx+b where m is the slope. m=493. The slope is 493.

8. Covert the equation into y=mx+b by rearranging the terms using y=mx+b.

5x-2y=48

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y=5/2 x -24

So the slope is 5/2.

8 0
3 years ago
Anyone mind helping me out?
Igoryamba

Answer:

611 square miles

Step-by-step explanation:

Area of triangle = (1/2)*a*b*sinC (formula when u are not given the height of the triangle, but u are given with the angle.)

= (1/2)*30*47*sin(60°)

= 610.54 square miles (2 d.p)

≈611 square miles (rounded to nearest mile)

:)

4 0
3 years ago
The school council was having a bake sale. Jaime purchased a brownie for $0.75, a
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Answer: the answer is 2.75 because

Step-by-step explanation: 1.25+0.75+0.75=2.75 hope i Helped mark me as brainliest

4 0
3 years ago
Help the question is the picture
nikdorinn [45]

Answer:

a>-21(1/3)

Step-by-step explanation:

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first thing is to divide both sides by 3/4 to isolate the variable.

Since it is not negative, the sign stays the same.  

-16/0.75=-21.3 repeating or just 1/3

5 0
3 years ago
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