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Q: How do you write an equation for a horitontal line?

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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

A square

The equation of a line with an undefined slope is x = a.

-12

The equation for a line is y = mx + b, where m is the slope and b is the y-intercept.

I need step by step on my graphic calculator on how to write an equation

y = ax + b

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.

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).

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