Tell whether the lines for each pair of equations are parallel, perpendicular, or neither. (two questions on
the test) 4y = -5x + 12 and y=5/4x-8

Question

Tell whether the lines for each pair of equations are parallel, perpendicular, or neither. (two questions on
the test) 4y = -5x + 12 and y=5/4x-8

shadowlegendx · Answer

What do you think?

shadowlegendx · Answer

All you have to look at are the slopes, which is 

5/4x 

BUT

Look at the other equation

4y = -5x + 12

You still have to simplify this

4y = -5x + 12

Divide the entire equation by 4

y = -5x/4 + 12

Remember that parallels lines are lines with the same exact slope. Perpendicular lines are lines with opposite reciprocals of each other. What criteria does this fill