horizontal = 0 slope
vertical = undefined
1. y = -3
The line has 0 slope, but its y-intercept is -3.
2. y = 2, 0 slope, (4,6) (5,6) (6,6) (7,6)
A horizontal line has 0 slope, but has a y-intercept, and the y-value does not change in a horizontal line.
3. x = 7
The vertical line has an undefined slope, since it is only going up. But because the line must go through the point given, it needs to be 7 units from the origin.
4. True
Horizontal lines have 0 slope, but do have a y-intercept and a constant y-value.
5. It is vertical
m = (4 - - 1) / (7 - 7)
m = 5 / 0 = undefined
The slope is undefined and the x value is constant through both points.
6. y = 3
The line has a y-intercept of 3 and 0 slope.
7. y = 3
The x-value does not matter for the equation of a horizontal line, only the y-value. We want it to go through the 3rd value above the origin, so our equation should be as shown.
8. The third option
x = -2 is a vertical line, of which goes through the point (-2, 0).
9. y = -1
The y-value is constant in both points, so this line should be horizontal and go through the y-value that is the same in both points.
10. x = 2
Any vertical line begins with x = ? and can have any number after the equal sign. An example is given.
Hope this helps!! :)
