2 years ago

What is the equation of the line containing the points (-1,3) and (2,9)

Mathematics

1 answer:

Paul [167]2 years ago

4 0

Answer:

y = 2x + 5

Step-by-step explanation:

First,

9-3 = 6

over

2-(-1) = 3

Then,

6 divided by 3 = 2

2 = slope

Next, using (-1,3), *you can use either ordered pair

y - 3 = 2 {x - (-1)}

y - 3 = 2x + 2

y = 2x + 5

You might be interested in

A triangle has height 15 in. And area 120 in2. what is length of its base

Novosadov [1.4K]

Working out is in picture

4 0

2 years ago

Read 2 more answers

Question 1

AnnyKZ [126]

Answer:

1. x=17

2. x=19

3. x=3

4. x=4

3 0

2 years ago

Read 2 more answers

Solve the equation for 0° ≤ x ≤ 90°. Round to the nearest degree. tan^2 B = 4

Anettt [7]

ANSWER

$B=63\degree$

EXPLANATION

We want to solve the trigonometric equation;

$tan^2(B)=4$ , where $0\degree \le B \le 90\degree$ .

Taking square root of both sides gives,

$tan(B)=\pm \sqrt{4}$

$tan(B)=\pm 2$

Since B is in the first quadrant, we proceed with;

$tan(B)=2$ , because the tangent ratio is positive in the first quadrant.

$\Rightarrow B =arctan(2)$

$\Rightarrow B =63.43\degree$ .

Correct to the nearest degree,

$B =63\degree$

7 0

3 years ago

Find the sum. 7x + 15x=

BaLLatris [955]

Answer:

7x + 15x= 21x

Step-by-step explanation:

7x + 15x

= (7 + 15)x

= 22x

4 0

3 years ago

Read 2 more answers

True or False?

Daniel [21]

Answer:

True

Step-by-step explanation:

7 0

2 years ago