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MrRa [10]
3 years ago
12

A line passes through the points (2,-2) and (-6, 2). The point (a, -4) is also one the line. What is the value of a

Mathematics
2 answers:
artcher [175]3 years ago
6 0

Answer:

D: 6

Step-by-step explanation:

I took the test :)

V125BC [204]3 years ago
3 0

Answer:

b

Step-by-step explanation:

1

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What is the product of (negative 6) (negative 7) (negative 1)? –42 –14 14 42
riadik2000 [5.3K]

Answer:

-42

Step-by-step explanation:

=> (-6)(-7)(-1)

=> (42)(-1)

=> -42

8 0
3 years ago
Read 2 more answers
Which is an equation in point-slope form for the given point and slope?
Kisachek [45]

The point-slope form: y-y_1=m(x-x_1)

Q2.

(1,\ -7)\to x_1=1,\ y_1=-7\\m=1\\\\y-(-7)=1(x-1)\\\\y+7=(x-1)

Q3.

(5,\ 9)\to x_1=5,\ y_1=9\\m=2\\\\y-9=2(x-5)

Q4.

y=mx+b\\\\(0,\ 1)\to b=1\\\\y=mx+1

The formula of a slope: m=\dfrac{x_2-x_1}{y_2-y_1}

((-2,\ 4)\to x_1=-2,\ y=4\\(2,\ -2)\to x_2=2,\ y_2=-2\\\\m=\dfrac{-2-4}{2-(-2)}=\dfrac{-6}{4}=-1.5

y=-1.5x+1

8 0
2 years ago
What is the slope of the line that passes through (-1,-2) and (-1,-3)
jok3333 [9.3K]
Slope: (y2-y1)/(x2-x1)
(-3+2)/(-1+1) = -1/0 = undefined
The slope is undefined
7 0
3 years ago
Read 2 more answers
What is the sum of all even numbers between 1 and 1000
weeeeeb [17]
There are 500 even numbers from 1 to 1000 starting with 2 and ending with 998. The sequence of even numbers is an arithmetic sequence with a common difference of 2. Using the equation for the arithmetic series,

                                       S = (a1 + an)(n/2)
and substituting, 
                                     
                                        S = (2 + 998)(500/2)
we get, 

                                        S = 250,000

Therefore, the sum of all even numbers between 1 and 1000 is 250,000.

4 0
3 years ago
Two friends go to a Mexican restaurant for lunch. One friend orders 1 soft taco and
maxonik [38]

Answer:

cost of a taco: $1.25

cost of a burrito: $2.50

Step-by-step explanation:

Let the cost of a taco be $t and the cost of a burrito be $b.

t +3b= 8.75 -----(1)

4t +2b= 10

Divide both sides by 2:

2t +b= 5

Making b the subject of formula:

b= 5 -2t -----(2)

Substitute (2) into (1):

t +3(5 -2t)= 8.75

Expand:

t +3(5) +3(-2t)= 8.75

t +15 -6t= 8.75

t -6t= 8.75 -15

-5t= -6.25

t= -6.25 ÷(-5)

t= 1.25

Substitute t= 1.25 into (2):

b= 5 -2(1.25)

b= 5 -2.5

b= 2.50

Thus, the cost of a taco is $1.25 and the cost of a burrito is $2.50.

8 0
3 years ago
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