Draw graph of the equation 2x – y + 3 = 0.write the co-ordinates of the points at which the line intersects the co-ordinate axes.

Step-by-step explanation:

Given expression:

     2x - y + 3  = 0

The co-ordinates of the points at which the line intersects the coordinate axes is unknown?

Now,

     2x - y + 3 = 0

 Let us rearrange the equation;

        -y = -2x - 3

Multiply through by (-1);

        y = 2x + 3

the point where the line intercept the y- axis, x = 0

  so,

          y = 2(0) + 3  = 3

Coordinates  = (0,3)

the point where the line intercepts the x-axis, y = 0;

       0 = 2x + 3

      2x  = -3

       x  =

Coordinates  = ( , 0)

answer:  

step-by-step explanation:

here x represents the height of the pole,

and, the height of the shadow of the pole is 12 feet.

also, the angle of elevation from the top of the pole is 40°,

therefore,

by the low of sine,

which is the required equation for finding the value of x,