Question

Determine which ordered pair is a solution of y = –5x + 10. a. (–15, 5)

b. (2, 0) c. (–1, –5) d. (3, 25)

Answer 1

B. (2,0)

Explanation:

The given equation is;

`y=-5x=10`

If an ordered pair is a solution, then the ordered pair must satisfy the given equation.

For (-15,5),we have

`5=-5(-15)+10`

`5=75+10`,this is FALSE.

For (2,0), we have

`0=-5(2)+10`

`0=-10+10`, this is TRUE

For (-1,-5), we have;

`-5=-5(-1)+10`

`-5=5+10`, this is FALSE.

For (3,25), we have;

`25=-5(3)+10`

`25=-15+10`, this is FALSE

Answer 2

y = - 5 x + 10
A ) x = - 15, y = 5
5 = 75 + 10
5 ≠ 85
B ) x = 2, y = 0
0 = - 5 · 2 + 10
0 = 0 ( correct )
C ) x = - 1, y = - 5,
- 5 = 5 + 10
- 5 ≠ 15
D ) x = 3, y = 25
25 = - 15 + 10
25 ≠ - 5
Answer:
B ) ( 2, 0 )