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Blizzard [7]
3 years ago
13

What is the slope intercept form of y + 1 = -2 (x-1)?

Mathematics
2 answers:
tester [92]3 years ago
7 0

Answer:

The eqaution y + 1 = -2 (x-1) in slope intercept form is

y = -2x - 3

Step-by-step explanation:

Write in slope-intercept form, y = mx + b

Mars2501 [29]3 years ago
4 0
Y+1 = -2x+2 (distribute)
Y=-2x + 1 (isolate y)
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T<br> ✓<br> Х<br> Find the sum of (x2 – 7x + 5) and (-3x2 - x + 10)<br> [
Zanzabum

Answer:

-2x² - 8x + 15 = 0

Step-by-step explanation:

Given the following algebraic expression;

x² – 7x + 5

-3x² - x + 10

To add the equation together;

x² – 7x + 5 + (-3x² - x + 10) = 0

x² – 7x + 5 - 3x² - x + 10 = 0

Collecting like terms, we have;

(x² - 3x²) - (7x + x) + (5 + 10) = 0

-2x² - 8x + 15 = 0

8 0
3 years ago
A parabola can be drawn given a focus of (5, -3) and a directrix of y=1. Write the equation of the parabola in any form.
Anna71 [15]

Answer:

(x²-10x+33)/(-8) = y

Step-by-step explanation:

The distance between any point on a parabola from both its focus and directrix are the same.

Let's say we have a point (x,y) on the parabola. We can then say that using the distance formula,

\sqrt{(x-5)^2+(y-(-3))^2}is the distance between (x,y) and the focus. Similarly, the distance between (x,y) and the directrix is |y-1| (I use absolute value here because distance is always positive). We can find this equation by taking the shortest distance from the point to the line. Because the closest point to the line will be the same x value as the point itself, the distance is simply the distance between the y value of the point and the y value of the directrix.

Equating the two equations given, we have

\sqrt{(x-5)^2+(y-(-3))^2} = |y-1|

square both sides to get

(x-5)²+(y+3)²=(y-1)²

expand the y components

(x-5)² + y²+6y+9 = y²-2y+1

subtract y²+6y+9 from both sides

(x-5)² = -8y - 8

expand the x components

x²-10x+25 = -8y - 8

add 8 to both sides to isolate the -8y

x²-10x+33 = -8y

divide both sides by -8 to isolate y

(x²-10x+33)/(-8) = y

6 0
2 years ago
Samantha earns $8 per hour at a candy store. She receives a 5% raise. What are her new hourly earnings?
d1i1m1o1n [39]
$8 x 5 = 40

40/100 = 0.4

$8 + 0.4 = $8.4

Therefore Samantha now earns $8.4 per hour.
4 0
3 years ago
A grant for students who intend to become teachers is known as the.
Lilit [14]

Answer:

A TEACH GRANT

Step-by-step explanation:

It stands for Teacher Education Assistance for College and Higher Education

7 0
3 years ago
Read 2 more answers
Which number line represents x2=16
Ivenika [448]

Answer:

8

Step-by-step explanation:

Well 2x=16 is the same as x=8 when you divide by 2. So the dot should be on 8.

6 0
3 years ago
Read 2 more answers
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