write an equation for the horizontal line that contains point E( -2 , -4) ?

Question

What do they mean about containg those points ? & horizontal line ?

Answer 1

If you look at a graph of the x and y axis, the horizontal line with the point (-2,-4) is y = -4.  I don't know what E means.  I assumed it is the letter for the point (-2, -4).  All of the x's have y = -4, so x isn't needed in the equation.

 

 

Answer 2

Hi Dinna,

Equations for horizontal lines are simply y = a number. That number represents how high, or low, the horizontal line will be.  For instance, y = 3 is the equation for the horizontal line that is 3 units above the x-axis and y = - 2 is the equation for a hoizontal line 2 units below the x-axis.

For your point E (-2, -4) you can find it on a coordinate plane - it will be how many units below the x-axis? And the equation will be?  Answer: y = -4 

Good luck with this topic, Dinna,

 Mary Ann