Question

Mark all ordered pairs which ARE a solution for y < 3 - 2x.


(0, 4)

(-1, 3)

(6, -8)

(-4, 5)

Answer 1

plug and play:

for the first, is 4 < 3 - 2(0)

second: is 3 < 3 - 2(-1) ?

if the y coordinate is less than 3 - 2times the x, it is a solution.

Answer 2

i dont really get what you mean @Euler271

Answer 3

the coordinates are point (x, y)

you need to plug them in to the equation y < 3 - 2x one by one to see if they are solutions.

for the first point (x, y) = (0, 4).

plugging this in the inequality gives: 4 < 3 - 2(0) which gives 4 < 3. this is false, 4 is not less than 3. therefore the point (0,4) is not a solution.

Answer 4

thank you so much, now i get it :)

Answer 5

glad i could help :)

Answer 6

wait so the only true one will be (6,-8) because -8 is less then 3.... all the rest false, right?

Answer 7

@Euler271 ???

Answer 8

yes

Answer 9

thanks again :)