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3 years ago

What is the answer.”what is the slope and the y-intercept of the line on the graph below.

Mathematics

1 answer:

bekas [8.4K]3 years ago

6 0

Answer: A: Slope = -4, y-intercept 1

Step-by-step explanation:

To find slope, do rise over run. The y-intercept is where the line crosses the y-axis.

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For which values of x is the expression x4 – 10x2 less than -9?

Julli [10]

$x^4-10x^2\ \textless \ -9\\
x^4-10x^2+9\ \textless \ 0\\
x^4-x^2-9x^2+9\ \textless \ 0\\
x^2(x^2-1)-9(x^2-1)\ \textless \ 0\\
(x^2-9)(x^2-1)\ \textless \ 0\\
(x-3)(x+3)(x-1)(x+1)\ \textless \ 0\\
x\in(-3,-1)\cup(1,3)
$

4 0

3 years ago

Read 2 more answers

Axis of symmetry of f(x)=(x+3)^2-8

Anna007 [38]

<u>ANSWER</u>

$x = - 3$

<u>EXPLANATION</u>

When a quadratic equation is in the vertex form,

$f(x) = a {(x - h)}^{2} + k$

the equation of axis of symmetry is simply

$x = h$

The given quadratic equation is

$f(x) = {(x + 3)}^{2} - 8$

We can rewrite this as

$f(x) = {(x - - 3)}^{2} - 8$

We now compare to

$f(x) = a {(x - h)}^{2} + k$

We have

$h = - 3 \: \: \: and \: \: k = - 8$

Therefore equation of axis of symmetry is:

$x = - 3$

7 0

3 years ago

Wha the MIDPOINT of (-6, 8) and (6, -7)

Serhud [2]

The midpoint is (0, 1/2)
hope this helps

8 0

3 years ago

Read 2 more answers

If the area of a circle is

ozzi

Answer:

Since area =7.7

$area = \frac{22}{7} {(r)}^{2} \\ {(r)}^{2} = 2.45 \\ r = 1.57$

Then the circumference is

$c = 2pi\times r \\ = 2 \times 3.14 \times 1.57 \\ = 9.859$

5 0

3 years ago

A student is told to work any 8 out of 10 questions on an exam. In how many different ways can he complete the exam

Korolek [52]

Answer:

Step-by-step explanation:

Assuming the order in which he answers the questions matter the answer is the number of permutations of 8 in 10.

This is 10! / (10-8)!

= 1,814.400.

If the order does not matter then the answer is the number of combinations of 8 from 10:

This is 10!/8!*2!

= 45.

7 0

3 years ago