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3 years ago

Which of these is a function please answer.

Mathematics

2 answers:

oksian1 [2.3K]3 years ago

5 0

Answer:

Options 1 and 4

Step-by-step explanation:

Option 1

x-values are different and y-values are same
This is a function

Option 2

x-values are repeated (3) with different y-values
This is not a function

Option 3

x-values are repeated and y-values are different
This is not a function

Option 4

x- values are different, y-values are different
This is a function

Natasha2012 [34]3 years ago

4 0

Answer:

1 and 3

Step-by-step explanation:

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Lines a and b are parallel. The slope of line b is * What is the slope of line a?

andrew11 [14]

Answer:

The slope of line a is * also.

Step-by-step explanation:

Parallel lines have the same slope. Whatever number, fraction, variable, symbol is given for the slope of one line, the other must have the same number, fraction, variable, symbol, if they are parallel.

5 0

2 years ago

Between which two ordered pairs does the graph of f(x) = one-halfx2 + x – 9 cross the negative x-axis?

Anit [1.1K]

Answer:

Step-by-step explanation:

we have that

$f(x) = x^2 + x - 9$

Using a graph tool

see the attached figure

The function represent a vertical parabola that open up

the vertex is a minimum-------> is the point (-0.5, -9.3)

The x-intercepts are the points when the y coordinate is equal to zero

The x-intercepts are the points (-3.5, 0) and (2.5, 0)

the function cross the negative x-axis at point

therefore, the answer is

(-4, 0) and (-3, 0)

6 0

3 years ago

Read 2 more answers

PLZ help me fast 2 mins left

jek_recluse [69]

Answer:

$\sqrt{-5}=i\sqrt{5}$

$\sqrt{-25}=5i$

Step-by-step explanation:

i is an imaginary unit, this means

$i^2=-1$

Rewrite -5 as $5\cdot (-1)=5\cdot i^2,$

then

$\sqrt{-5}=\sqrt{5i^2}=\sqrt{5}\cdot \sqrt{i^2}=\sqrt{5}\cdot i=i\sqrt{5}$

Rewrite -25 as $-25=25\cdot (-1)=25\cdot i^2,$

then

$\sqrt{-25}=\sqrt{25\cdot i^2}=\sqrt{25}\cdot \sqrt{i^2}=5\cdot i=5i$

6 0

3 years ago

A(x-y) + b (x-y) factorize

Andre45 [30]

Answer:Given expression : a(x-y)-b(x-y)

Now, (x-y) is common in both terms.

First factor is (x-y).

∴a(x−y)−b(x−y)=(x−y)(a−b)

If you are reading this hope you have a wonderful day and may your dreams come true!

Good luck

4 0

3 years ago

URGENT!!! PLEASE HELP (30 points !!!)

melamori03 [73]

The line with the arrows is where y=-3 is

5 0

3 years ago