4
then the slope is x=y. there is no slope.
x = -3 produces a vertical straight line parallel to the y axis with an x intercept at -3. A vertical line has an infinite (undefined) slope.
Without an equation, you know nothing about the slope of a line just because x equals 0. Slope is the change in y value divided by the change in x value over a segment of a line. When you only have a single x value, there is no change so the slope is undefined. Or if you are stating the value of x is 0 for all values of y, then the slope is infinite.
y=x y=1x The slope is one.
4
then the slope is x=y. there is no slope.
x = -3 produces a vertical straight line parallel to the y axis with an x intercept at -3. A vertical line has an infinite (undefined) slope.
Without an equation, you know nothing about the slope of a line just because x equals 0. Slope is the change in y value divided by the change in x value over a segment of a line. When you only have a single x value, there is no change so the slope is undefined. Or if you are stating the value of x is 0 for all values of y, then the slope is infinite.
y=x y=1x The slope is one.
9
The slope of y = 9 is infinite (undefined), since the y-value increases infinitely with no change of x.
when it is a parallel line across the x and y axis
Y is undefined because the line x=1 never crosses the y axis.
yes, change in y over change in x equals slope
if the x equals -1.2 and the y is -4, 4 what is the slope
If the line runs parallel to the x axis (horizontally), its slope is 0. If runs parallel to the y axis (vertically), then its slope is undefined. This is because slope equals rise (y) divided by run (x). For example, if the line is raised 0 units on the y scale and runs 3 units over from the origin on the x scale, you calculate slope by dividing 0 (rise) by 3 (run), which equals 0. On the other hand, if we were to flip the units, the case would be different. If you go up 3 units on the y scale, and over 0 units on the x scale, you would divide 3 (rise) by 0 (run), which is undefined because it is impossible to divide by zero.