Answer
$x-y=4$
Point A:
$x-y=4$
$(0)-y=4$
$-y=4$
$y=-4$
Point B:
$x-y=4$
$x-(2)=4$
$x=4+2$
$x=6$
Point C:
$x-y=4$
$(-1)-y=4$
$-y=4+1$
$-y=5$
$y=-5$
Work Step by Step
To get the coordinates of point A, substitute the given x-value of 0 into the given equation $x-y=4$ to get the y-value of y=-4. Hence, we know that when x is 0, y is -4. i.e (0,-4) is a point on the line.
To get the coordinates of point B, substitute the given y-value of 2 into the given equation $x-y=4$ to get the x-value of x=6. Hence, we know that when y is 2, x is 6. i.e (6,2) is a point on the line.
To get the coordinates of point C, substitute the given x-value of -1 into the given equation $x-y=4$ to get the y-value of y=5. Hence, we know that when x is -1, y is -5. i.e (-1,-5) is a point on the line.
Find the three points using the x and y values that you found, i.e graph points A, B and C. Using a ruler, draw a straight line passing through all three points to graph the equation of $x-y=4$.
