Parallel and perpendicular lines point slope form,, need help with stuff for midterms :(!!!

Tips:

Hey, here are some things that can help:

1. Remember that parallel lines have the same slope, and perpendicular lines have opposite and reciprocal slopes (flip the fraction and change the sign).

2. When it asks you for a line passing through a specific point, using the slope for the new line, plug in for x and y and solve to get b (the y-intercept).

3. Slope-intercept: y=mx+b

Point-slope: y-y1=m(x-x1)

For point-slope form, you simply substitute a given slope and point into the equation. For example, if you are given that m=3 and the point (5,2) your point-slope equation would be: y-5=3(x-2)

If you are asked to change a point-slope equation into slope-intercept, simply solve for y. In this case, our point-slope equation would become y=3x-1.

Hope this helps!

a) one student is chosen from classroom a, then a student is chosen from classroom b.  

step-by-step explanation:

independent events are ones in which the probability of one event does not affect the probability of the second event.

one student is chosen from classroom a; this does not affect the chances of choosing a student from classroom b.   this makes these independent events.

when one card is chosen from a standard deck and then set aside before a second card is chosen, the probability of the second card being chosen changes.   this makes them dependent events.

when one student is chosen from classroom a and then a second student is chosen from classroom a, the probability of choosing the second student changes.   this makes them dependent events.

when a letter is chosen from the alphabet and then a second letter is chosen, the probability of choosing the second letter changes.   this makes them dependent events.