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postnew [5]
3 years ago
12

Guided Practice

Mathematics
2 answers:
irga5000 [103]3 years ago
3 0
It’s choice A! :) y= -x - 6
max2010maxim [7]3 years ago
3 0

Answer:  here is the answer

The equation of the line that has a slope of -1 and a y-intercept of -6 is:

y=-1x-6.

Step-by-step explanation:  here is the explanation

You want to find the equation for a line that has a slope of -1 and a y-intercept of -6.

First of all, remember what the equation of a line is:

y = mx+b

Where:

m is the slope, and

b is the y-intercept

All you really have to do here is

replace m with -1, which is the slope you gave, and

replace b with -6, the y-intercept you gave,

in the equation y=mx+b.

The equation of the line that has a slope of -1 and a y-intercept of -6 is:

y=-1x-6.

You might be interested in
Find the average rate of change of f ( x ) = 3 x 2 − 9 on the interval [ 2 , b ] . Your answer will be an expression involving b
iVinArrow [24]

Answer:

m = 3b+6

Step-by-step explanation:

Given

f(x)=3x^2 - 9

Required

The average rate over [2,b]

Average rate (m) is calculated using:

m = \frac{f(b) - f(a)}{b - a}

Where

[a,b] = [2,b]

So, we have:

m = \frac{f(b) - f(2)}{b - 2}

Calculate f(b) and f(2)

f(x)=3x^2 - 9

f(b)=3b^2 - 9

f(2)=3*2^2 - 9 = 12 - 9 = 3

So, we have:

m = \frac{f(b) - f(2)}{b - 2}

m = \frac{3b^2 - 9 - 3}{b - 2}

m = \frac{3b^2 - 12}{b - 2}

Expand the numerator

m = \frac{3b^2 + 6b-6b-12}{b - 2}

Factorize

m = \frac{b(3b + 6)-2(3b+6)}{b - 2}

Factor out 3b + 6

m = \frac{(b -2)(3b+6)}{b - 2}

Cancel out b - 2

m = 3b+6

4 0
3 years ago
ANSWER QUICK FOR BRANLIEST PLEASEEE The ration of boys to girls is 5:4. If there are 20 girls, how many boys are there?
Airida [17]

Answer:

25

Step-by-step explanation:

5 boys: 4 girls  = x boys: 20 girls

Multiple of 5 to get from 4 girls to 20 girls

use the same multiple for boys

5 boys x 5 = 25

3 0
3 years ago
Which of the following geometric objects occupy two dimensions
zhuklara [117]
The second a first object do follow geometric demetions
4 0
4 years ago
Which factors can be multiplied together to make the trinomial 5x^2+8x-4
Kitty [74]

Answer:

Step-by-step explanation:

hello :

5x²+8x-4  quadratic expression when : a = 5  and  b=8  and  c= -4

∆ = b²-4ac        ∆ = 8²-4(5)(-4) = 64 +80 = 144 = 12²

X1 = ( -b -√∆)/2a       X1 = (-8-12)/10 = -20/10= -2

X2 =(-b+√∆)/2a       X2 = (-8+12)/10 = 4/10 = 2/5

us factorisation : a(X-X1)(X-X2)

5x²+8x-4= 5(x+2)(x-2/5) = (x+2)(5x-2)

you can verify ;  (x+2)(5x-2) = 5x²-2x+10x-4 = 5x²+8x-4

4 0
3 years ago
How to solve 7(1+4n)+4
mylen [45]
7 + 28n + 4
28n + (7 + 4)
28n + 11
6 0
3 years ago
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