|
Question 510120: If x=4, how do you find the slope and y-intercept?
Answer by oberobic(2304)   (Show Source):
You can put this solution on YOUR website! If x=4 there is no slope and there is no y-intercept.
.
x=4 defines a vertical line that goes through x=4.
.
y can take on any value from -infinity to +infinity, but there is no defined slope
.
Recall the slope = change in y / change in x
There is no change in x, so we are attempting to divide by 0.
Dividing by zero is undefined.
.
In slope-intercept form: y = mx+b,
the y-intercept is 'b', defining the point (0,b).
.
But we're told x=4, so there is no point where x=0.
.
Done.
|
|
|
| |
