Question

Построить график Функции y=2x-3. Пользуясь графиком найти: a)Значение функции, если значение аргумента равно 2. б)Значении аргумента, при котором значение функции равно -7 в) В одной системе кординат построить графики функции y=-3x, и y=4 СРОЧНО ПОЖАЛУЙСТА(

Answer 1

Ответ: график построй сам, проведи прямую между точек (0;-3) и (2;1)

а) значение функции равно y=2*2-3=1

б) значение аргумента равно

-7=2x-3

-2x=4

x=-2

в) смотри фотокарточки. а еще лучше: учи алгебру.

первая картинка: F(x)=4, вторая F(x)=-3x

Answer 2

Graph of the Function y=2x-3

To graph the function y=2x-3, we can plot a few points and then connect them to form a straight line. The general form of a linear function is y=mx+b, where m is the slope and b is the y-intercept. For y=2x-3, the slope is 2 and the y-intercept is -3.

Let's plot the graph of the function y=2x-3:

   ^
y  |
   |
3  |     *
   |        *
   |           *
   |              *
   |                 *
   |                    *
   |______________________________> x

Finding Values Using the Graph

a) Value of the Function When the Argument is 2: - To find the value of the function when the argument (x) is 2, we can simply substitute x=2 into the function y=2x-3. - Substituting x=2 into the function gives us y=2*2-3=4-3=1.

b) Value of the Argument When the Value of the Function is -7: - To find the value of the argument (x) when the value of the function (y) is -7, we can look at the graph and find the x-coordinate where y=-7. - By inspecting the graph, we can see that when y=-7, the corresponding x-value is x=-2.

Graphing Multiple Functions in One Coordinate System

To graph multiple functions in one coordinate system, we can plot each function on the same set of axes.

Let's plot the functions y=-3x and y=4 in the same coordinate system:

   ^
y  |
   |
4  |              *
   |              *
   |              *
   |              *
   |              *
   |              *
   |______________*______________> x
   |              |
   |              |
   |              |
   |              |
   |              |
   |              |
-3 |______________|

In this graph, the function y=-3x is a straight line with a negative slope, and the function y=4 is a horizontal line passing through the y-axis at y=4.

I hope this helps! If you have any further questions or need additional assistance, feel free to ask.