Question

Find the equation of the line that passes through (0,20) and (4, 4). (You have already calculated the slope in question 13)

y = -4x + 20

y = -4x+ 4

y = -0.25x + 20

y = 0.25x + 4

Answer 1

@Nnesha

Answer 2

What was the slope that you calculated in question 13?

Answer 3

-4

Answer 4

use the point slope formula
\[y-y_1=m(x-x_1)\]
plug in one of the given points in (x1,y1)
and plug the slope which represents m in this formula

Answer 5

0_o

Answer 6

so use this formula y=mx + b where m is a slope and b is y -intercept
put the one of your favourite order pair in to the equation

Answer 7

that looks like inter galactic alien language to me :D

Answer 8

so y = -4x + 20

Answer 9

no?

Answer 10

you know the m=-4 so you can see that c and d are not have -4 as a slope sooooo that are wrong and now we have a and b

Answer 11

or use y=mx+b the slope intercept form
and use one of the given points, let's say (0,20) and plug them with the slope as well
and substitute
y=(-4)·x+b
y=(-4)·(0)+b
(20)=(-4)·(0)+b

Answer 12

right you got the right answer

Answer 13

you're looking for the y-intercept or b, in this equation
(20)=(-4)·(0)+b

Answer 14

thank you guys sooooooooooooo much for your patience and help :D

Answer 15

i seriously suck

Answer 16

you most welcome :) :)