1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Kazeer [188]
3 years ago
7

80 POINTS for right answer! 4 questions! Math only

Mathematics
2 answers:
34kurt3 years ago
8 0
1.
A graph of linear function is a straight line.
Linear function in a slope-intercept form: y = mx + b

Answer: Equation 3: y = 12x + 17.

2.
x|-1 | 0 | 1 | ? |
y| 4 | 7 |10| ? |

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

We choose:
(-1; 4)\to x_1=-1\ and\ y_1=4\\(0;\ 7)\to x_2=0\ and\ y_2=7

subtitute:

m=\dfrac{7-4}{0-(-1)}=\dfrac{3}{1}=3

a slope-intercept form: y-y_1=m(x-x_1)

subtitute:

y-4=3(x-(-1))\\\\y-4=3(x+1)\\\\y-4=3x+3\ \ \ \ |add\ 4\ to\ both\ sides\\\\y=3x+7\ (*)

subtitute x = 2 to the equation (*):

y=3\cdot2+7=6+7=13

Answer: (2, 13)


3.
(-2; 7), (-5; 4)

the slope: m=\dfrac{4-7}{-5-(-2)}=\dfrac{-3}{-5+2}=\dfrac{-3}{-3}=1

y-7=1(x-(-2))\to y-7=x+2\ \ \ \ |add\ 7\ to\ both\ sides\\y=x+9

check other:

(-8;\ 1)\to L=1;\ R=-8+9=1;\ L=R-correct\\(-11;-2)\to L=-2;\ R=-11+9=-2;\ L=R-correct

The conclusion: It's a linear function

Answer: It is a linear function because there is a constant rate of change in both the input and output values.


4.
y = 3x + 5    /look at the picture/

Answer: It is a linear function because its graph contains the points (0, 5), (1, 8), (2, 11), which are on a straight line.

check:
(0; 5)\to L=5; R=3\cdot0+5=5;\ L=R-correct\\(1;\ 8)\to L=8;\ R=3\cdot1+5=8;\ L=R-correct\\(2;\ 11)\to L=11;\ R=3\cdot2+5=11;\ L=R-correct

Murrr4er [49]3 years ago
4 0
1. Equation 3, there is a degree of 1
2. (2,13)
3. <span>It is a linear function because there is a constant rate of change in both the input and output values. 
4. </span><span>It is a linear function because its graph contains the points (0, 0), (1, 0), (2, 8), which are on a straight line.</span>
You might be interested in
H²+10h=-21 solve quadratic trinomials
sladkih [1.3K]
H²+10h+21 = 0
h²+3h+7h+21 = 0
h(h+3)+7(h+3) = 0
(h+3)(h+7) = 0

h+3=0
h = -3

h+7=0
h=-7
5 0
3 years ago
I need help with geometry
VLD [36.1K]

Answer:

180-71

=109

the last one

5 0
3 years ago
Please help me with this question
Anettt [7]

Answer:

136

Step-by-step explanation:

(6-10i)(6+10i)

36 +60i - 60i - 100i²

36 - 100i² (i² = -1)

36 + 100

136

3 0
3 years ago
Read 2 more answers
Please help IM SO CONFUSED!
rodikova [14]

Answer:

18

Step-by-step explanation:

You can see from the table that 2 bracelets are made every 30 minutes.

There are 9 intervals of 30 minutes each in 4.5 hours.

So, the number of bracelets that are made in 4.5 hours is

9x2=18

Another way to see this is to note from the table that 4 bracelets are made in 60 minute, which is 1 hour.  So, in 4 hours, 16 bracelets will be made. Also, from the table, 2 bracelets are made in 30 minutes, which is 1/2 hour.  So, adding up, 18 bracelets are made in 4.5 hours.

4 0
3 years ago
How do you remove is the door knob from the surface area of your bedroom door
pogonyaev

Answer:

by adding the circle of area below the doorknob and removing the surface area of the knob itself

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
Other questions:
  • The volume (in cubic meters), vv, of a rectangular room is given by the expression: v = 162-2b^6v=162?2b 6 Where bb is a positiv
    13·1 answer
  • 144 students enter a spelling bee,but only 1/6 of the group will make into the semi-final round, and only 2/3 that group will ma
    13·1 answer
  • What's the answer to this problem 86÷5=n
    12·1 answer
  • Real world example of parallel lines
    7·2 answers
  • When you translate to the right, the x-coordinate of a point ________.
    6·2 answers
  • Write 6,000,370 in scientific notation.
    9·1 answer
  • Fine The Slope Of Each Line Defined Below And Compare Their Values.
    12·1 answer
  • Can someone write the fraction 4/11 as a decimal ?
    10·2 answers
  • 7(x–1)–5(2x+2)=49<br> Please answer!
    12·2 answers
  • Lian needs to solve the quadratic equation: x^2 - 4x - 2 = 0. Which statement about how Lian should solve this equation is true?
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!