Question

What is the solution to the system?


Line 1
x y
–2 –4
–1 –1

Line 2
x y
2 3
3 1



( ___,___ )

Answer 1

i belive its -2,-2

Answer 2

@gerryliyana @Compassionate

Answer 3

(-2,-2) does not lie on line 1. The point (-2,-4) lies on line 1. Look at the first row of line 1.

Answer 4

oh ok i see so its -2,-4?

Answer 5

I don't know. You have to either graph the lines and see where they intersect

OR

find the equation of each line and use elimination or substitution

Answer 6

i believe its elimination

Answer 7

@jim_thompson5910

Answer 8

ok find the equation of each line and use elimination

Answer 9

it just wants the points what should i do?

Answer 10

@jim_thompson5910

Answer 11

what is the equation of line 1?

Answer 12

(-2,-4)(-1,-1)

Answer 13

find the equation of the line through those 2 points

Answer 14

how should i do that

Answer 15

first you find the slope

Answer 16

so use the slope formula

Answer 17

what is the slope formula?they never taught me that

Answer 18

m = (y2 - y1)/(x2 - x1)

Answer 19

that should hopefully look familiar

Answer 20

oh ok they call it something different

Answer 21

gradient formula?

Answer 22

m=-1-(-1)/-2-(-4)

Answer 23

is that it @jim_thompson5910

Answer 24

you subtract the y values

then the x values

then divide the two differences (y over x)

Answer 25

subtract in the same order