Question

Write the equation of the line that passes through (3, 6) and (0, –3) in slope-intercept form.

y = 3x – 6

y = 3x – 3

y = 3x + 3

y = 3x + 6

Answer 1

@jim_thompson5910 can you help

Answer 2

use the slope formula (y2-y1)/x2-x1)
-3-6/0-3=-9/-3 which would give the slope equa to 3

Answer 3

another way is to plug each point into each equation

Answer 4

if both points satisfy the equation, then you found your answer

Answer 5

wait @jim_thompson5910 can you show me what i have to plug in for the equation

Answer 6

if you look at choice A) y = 3x – 6

Answer 7

and plug in (3,6) you get this

Answer 8

alright i will do that now

Answer 9

y = 3x – 6

6 = 3(3) – 6 ... plug in x = 3 and y = 6

6 = 9 - 6

6 = 3

since that equation is false, this means that (3,6) is NOT on the line y = 3x – 6

Answer 10

what about 0,-6 what happened to that?

Answer 11

0,-6 ?

Answer 12

-3*

Answer 13

well if the first point does NOT work for y = 3x – 6, then what does it matter if the second point works or not

Answer 14

BOTH points need to work

Answer 15

for choice B is works out

Answer 16

so if one doesn't work, then you can eliminate that answer choice

Answer 17

yep it's choice B