Question

The lines of the equations are parallel, perpendicular, or neither.

y = 2x + 3
y = 2x

parallel
perpendicular
neither

Answer 1

Parallel = Same Slope, Different y-intercepts

Perpendicular = Opposite Slopes

Answer 2

First off, tell me what the slopes are for y = 2x + 3 and y = 2x.

Both of them are in the form of y = mx + b, where 'm' is the slope.

Answer 3

???

Answer 4

What's the slope of y = 2x + 3?

Answer 5

It's located right before the 'x'.

Answer 6

2

Answer 7

Yep, and what's the slope of y = 2x?

Answer 8

2?

Answer 9

Yep!

So the slopes are the same, so the lines are parallel.

Answer 10

What about these?
y = -x + 3
y = -x - 3

Answer 11

??

Answer 12

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