Question

Which ordered pair does NOT lie on the graph of h(x)=-2x + 7

A (-2, 3)
B.(-1, 9)
C (3, 1)
D (4, -1)

Answer 1

Choice A is the answer.

Explanation:

We have given a function.

h(x) = -2x+7

We have to choose the ordered pair which doesn't lie on the graph of given function.

A. (-2,3)

Putting x = -2 in given function, we have

h(x) = -2(-2)+7

h(x) = 4+7

h(x) = 11 (false)

B. (-1,9)

putting x = -1 in given function, we have

h(x) = -2(-1)+7

h(x) = 2+7 = 9 (true)

C. (3,1)

Putting x = 3 in given function, we have

h(x) = -2(3)+7

h(x) = -6+7

h(x) = 1 (true)

D. (4, -1)

Putting x = 4 in given function, we have

h(x) = -2(4)+7

h(x) = -8+7

h(x) = -1 (true)

Answer 2

Answer: A (-2, 3)

Explanation:

1. To know which oredered pairs does not lie on the graph, you must substitute the x-coordinate of each one of thm into the function and if you obtain the y-coordinate shown in that ordered pair, then that point lies on the graph.

2. Therefore, you have:

A. x=-2

`h(x)=-2(-2)+7=11` (It does not lie on the graph).

B. x=--1

`h(x)=-2(-1)+7=9` (It lies on the graph).

C. x=3

`h(x)=-2(3)+7=1` (It lies on the graph).

D. x=4

`h(x)=-2(4)+7=-1` (It lies on the graph).

Therefore, the answer is the option A.