Question

Graph the line. 3x - 6y = 18

Answer 1

when you plug in x = 0, what do you get when you solve for y?

Answer 2

(-3x) 3x - 6y = 18 (- 3x)
-6y = 18 - 3x

Answer 3

Is that what I do?

Answer 4

3x - 6y = 18

3*0 - 6y = 18 ... replace x with 0 (aka, plug in x = 0)

0 - 6y = 18

-6y = 18

y = ???

Answer 5

Oh, -3

Answer 6

yep, so (0,-3) is on the line

Answer 7

when y = 0, what is x?

Answer 8

3x - 0y = 18
3x = 18
/3 /3
x = 6

Answer 9

?

Answer 10

good, x = 6, y = 0

so the point (6,0) is on the line

Answer 11

So 6,3?

Answer 12

so we know these two points lie on the line

y-intercept (0,-3)
x-intercept (6,0)

Answer 13

plot those two points, then draw a line through them

Answer 14

Oh, thanks,

Answer 15

yw

Answer 16

c: