Is the line through points P(-7, 2) and Q(7, -6) parallel to the line through points R(-1, -5) and S(-3, -1)? Explain.

No; one line has zero slope, the other has no slope.
Yes; the lines are both vertical.
Yes; the lines have equal slopes.
No; the lines have unequal slopes.

Question

Is the line through points P(-7, 2) and Q(7, -6) parallel to the line through points R(-1, -5) and S(-3, -1)? Explain.

No; one line has zero slope, the other has no slope.
Yes; the lines are both vertical.
Yes; the lines have equal slopes.
No; the lines have unequal slopes.

amistre64 · Answer

use the slope formula and compare their slopes ...

anonymous · Answer

I don't know the slope formula.

amistre64 · Answer

it should be in your class material ....

amistre64 · Answer

$$slope=\frac{y_o-y_1}{x_0-x_1}$$

amistre64 · Answer

in other words, subtract one point from the other and stack y/x

amistre64 · Answer

so what is R-S ?

amistre64 · Answer

opps, i did x/y :) 

  P(-7, 2) 
- Q(7, -6)
---------
    -14, 8;  slope is -8/14  reduce as wanted

anonymous · Answer

R-S = 4, -2; slope is -2/4?

amistre64 · Answer

lets check :)

  R(-1, -5)
- S(-3, -1)
----------
       2, -4   slope is -4/2   but that was a good attempt

amistre64 · Answer

since -8/14  is in no way equal to -4/2  id have to say they aint parallel

anonymous · Answer

So it's D?

amistre64 · Answer

D is good for me yes