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neonofarm [45]
3 years ago
12

A coordinate system, or ____________________, is used to locate points in a 2-dimensional plane.

Mathematics
1 answer:
andreev551 [17]3 years ago
6 0

Answer:

A coordinate system,or Coordinate plain ,is used to locate points in a 2-dimensional plane.

explanation:

A coordinate plain is formed by the intersection of two lines.One line is vertical and the other is horizontal.The vertical line is called y- axis and the horizontal line is called x-axis. It is two dimensional plane,which means it has length and breadth but no depth.The point where both the lines intersect is called the point of origin.Any point can be located on the coordinate plain by numbers(x,y). These pair of numbers are called coordinates.

It is used to plot points and lines.This system explains algebraic concepts .it has four equal divisions called quadrants namely I ,II,III,IV.

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F(x) =5+ 1 , find f(-4)
tester [92]

Answer:

Step-by-step explanation:

F(x) =5x + 1 , find f(-4)

Putting value of x = 4

F(4) = 5(4) + 1

= 20 + 1 = 21

5 0
3 years ago
Find an equation in standard form of the parabola passing through these points: (0,-6),(-1,-12),(3,0)
Elan Coil [88]
One form of the equation of a parabola is
y = ax² + bx + c

The curve passes through (0,-6), (-1,-12) and (3,0). Therefore
c = - 6                       (1)
a - b + c = -12            (2)
9a + 3b + c = 0         (3)

Substitute (1) into (2) and into (3).
a - b -6 = -12
a - b = -6                  (4)
9a + 3b - 6 = 0
9a + 3b = 6              (5)

Substitute a = b - 6 from (4) into (5).
9(b - 6) + 3b = 6
12b - 54 = 6
12b = 60
b = 5
a = b - 6 = -1

The equation is
y = -x² + 5x - 6 

Let us use completing the square to write the equation in standard form for a parabola.
y = -[x² - 5x] - 6
   = -[ (x - 2.5)² - 2.5²] - 6
   = -(x - 2.5)² + 6.25 - 6

y = -(x - 2.5)² + 0.25
This is the standdard form of the equation for the parabola.
The vertex us at (2.5, 0.25).
The axis of symmetry is x = 2.5
Because the leading coefficient is -1 (negative), the curve opens downward.
The graph is shown below.

Answer: y = -(x - 2.5)² + 0.25

3 0
3 years ago
A.3(f) The line graphed on the grid represents the first of two equations in a system of linear equations.
Aneli [31]
I don’t any idea for this
6 0
2 years ago
Please can someone help me
Fofino [41]

Answer:

a. 25%

b. 55%

c. 35%

Hope it helps you and pls mark as brainliest : )

4 0
3 years ago
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gavmur [86]
What are the questions?
5 0
3 years ago
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