For the equation, complete the given ordered pairs. 3x-y=7 (0, ), (1, ), ( ,7)

Question

still don't understand what the equation is 

Answer 1

The Standard Form of the equation of a line looks like this:   Ax + By = C
The slope-intercept form of the equation of a line looks like this:    y = mx + b
(there are more)
 
The equation in this problem is in Standard Form.  It is:     3x -y = 7

This equation is true for these pairs of (x,y) values [that is, these are points on this line]:
    (0,-7)   The point where x=0 and y=-7
    (1,-4)   The point where x=1 and y=-4
    (14/3,7)   The point where x=14/3 and y=7

 

Note: the point where x=0 [the point {0,-7)] is called the y-intercept

The point where y=0 is the x-intercept; that is, the point where the line crosses the x-axis. What are the coordinates of the x-intercept (__,0) ?

Answer 2

The equation is 3x-y=7

The ordered pairs (x , y) give you either an x or y to plug in, so you can find the missing value.

 

For example:

 

3(0) - y = 7

-y = 7

y = -7

 

so the first ordered pair is (0 , -7)