X and y intercepts help.

1. What is the x and y intercepts of 7x-8y=168.

2. What is the slope of the line 2y=x+2.

3. What is the slope of the line

5x+3y=3

20x+12y=0

4. what is the slope intercept form equation of m=6/7, (6,-9)

1) for x-intercept, let y=0 and calculate. you now have the point ( ,0).

for the y-intercept, let x=0 and calculate. you now have the point (0, )

2) divide both sides by 2 to get slope of 1/2...

3) 5x+3y=3...slope is -5/3...

20x+12y=0...slope is -20/12 or -5/3...

4) first use point slope: y+9 = (6/7)(x-6) = 6/7(x) -(36/7). now subtract nine on both sides and simplify so we have y = ...