Question

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

Answer 1

Answer:

Choice A is the answer.

Step-by-step 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)

Step-by-step 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.