Question

i have two points (1,5) and (3,1) im trying to find my 3rd point but dont know how....and how do i get my slope with the given info

Answer 1

the slope = (1-5) / (3-1) = -4/2 = -2

Answer 2

so i just subtract the points??? to get the slope y=-2x+

Answer 3

how do i get the y and x intercept

Answer 4

the equation of the line will be y-1 = -2(x-3)
y = -2x + 7
to find a third point just plug in a value for x
eg let x = 2
then y = -2(2) + 7 = 3

this point is (2,3)

Answer 5

y intercept is value of y when x = 0
so its y = 0 +7 = 7

Answer 6

x intercept is value of x when y = 0
so 0 = -2x + 7
2x = 7
x = 3.5 = x intercept

Answer 7

so to find a third point what equation do i use

Answer 8

u use y= -2x + 7
pick a value for x and plug it into this equation
eg let x = 4
then y = -2*4 + 7
= -8 + 7 = -1

so a third point is (4,-1)

Answer 9

the line look something like: