Question

What is the x-coordinate of the x-intercept of the line that passes through points (-5, 3) and (1, -3)?

Answer 1

first step: find the equation of that line. do you know how?

Answer 2

no

Answer 3

use the formula \[\Large y -y_1 = \frac{y_2 - y_1}{x_2 - x_1} (x-x_1)\]
do you know what those notations mean?

Answer 4

yes

Answer 5

wonderful

Answer 6

tell me when you get a result

Answer 7

its y2-y1 first right?

Answer 8

what do you mean?

Answer 9

is the answer -1?

Answer 10

how did you get that?

Answer 11

-3-3=-3-3/1- -5(1- -5)

Answer 12

noo...

Answer 13

where'd i go wrong

Answer 14

it's y - y1 and x - x1 NOT y2 - y1 and x2 -x1

Answer 15

look at the formula i wrote

Answer 16

well whats y and x?

Answer 17

nothing..you just put them as y and x

Answer 18

ok

Answer 19

y-3=-6/6(x+5)

Answer 20

correct simplify it

Answer 21

y-3=x+5

Answer 22

*-x+5

Answer 23

good

y - 3 = -x - 5

now simplify it more

Answer 24

how?

Answer 25

add 3 to both sides

Answer 26

y=-x-2

Answer 27

good. now let y = 0 and solve for x

Answer 28

x=2

Answer 29

that is now the x coordinate of the x intercept of the line

Answer 30

thanks

Answer 31

welcome