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I'm pretty sure it's undefined meaning it is a vertical line. * * * * * No, it is not. It is a horizontal line, 1 unit above the x-axis. Its slope-intercept equation can be written as y = 0x + c : that is, slope = 0, intercept = 1.
As written this is not a graphable thing. I does not represent a graphable equation because there is no "=" sign. Whatever the equation might be, the x intercept is found by setting y=0, which leaves you with an equation for x, which is the intercept.
The equation of the line can be written as y = mx + b, where m is the slope and b is the y-intercept. Given that the slope is 3 and the y-intercept is (0, -10), the equation of the line is y = 3x - 10.
The equation, y = -4x - 3, is written in what's called slope-intercept form. The general equation for slope-intercept form is y = mx + b, where m is the slope of the line, and b is the y-intercept. So, for the equation in question, m = -4 and b = -3. Thus, the slope of the line is -4.
To work out the equation of a straight line a pair of coordinates are needed or a coordinate and its slope. But in general when lines are parallel to each other on the Cartesian plane they have the same slope but with different y intercepts.