if a line has a slope of -2 and a point on the line has coordinates of (3, -5) write an equation for the line in point slope form
The equation of a line with an undefined slope is x = a.
I need step by step on my graphic calculator on how to write an equation
No, you need either two points, one point and a slope, one point and a y-intercept, or a y-intercept an a slope. You can also write the equation of a line with an equation of another line but you would have to know if it is parallel or perpendicular.
y = ax + b
Write the equation of the line that passes through the points (3, -5) and (-4, -5)
Any vertical line has an undefined slope. The equation of the vertical line is x = a where the x-intercept is a.
A vertical line has the equation [ x = a number ]. A horizontal line has the equation [ y = a number ].
You cannot define a line with a single point (a single point only defines itself). You need two points to define a line (and therefore to write the equation for it).
The formula for a line is: Y = mX + b