74,017 views
37 votes
37 votes
Write the ordered pairs that makes the equations true(-1,4) (2, 3) (2,-3)(2-2) y=x + 5 y=2x +6

User Ed Guiness
by
2.5k points

1 Answer

10 votes
10 votes

Answer:

(- 1, 4 ) makes both equations true

Explanation:

substitute the x- coordinate of each point into the right side of both equations and if value obtained is equal to the left side, that is the y- coordinate of the point, then it makes the equation true.

(- 1, 4 )

y = x + 5 = - 1 + 5 = 4 ← true

y = 2x + 6 = 2(- 1) + 6 = - 2 + 6 = 4 ← true

(2, 3 )

y = x + 5 = 2 + 5 = 7 ≠ 3 ← false

y = 2x + 6 = 2(2) + 6 = 4 + 6 = 10 ≠ 3 ← false

(2, - 3 )

we know from the previous part for x = 2 that y = 7 , 10 ≠ - 3

similarly

(2, - 2 )

we know when x = 2 that y = 2 and y = 10 ≠ - 2

then the ordered pair that makes both equations true is (- 1, 4 )

User NetAction
by
3.1k points