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hi :((( please help me solve questions 2 and 3 (the image below)

Hi Please Help Me Solve Questions 2 And 3 The Image Below class=

Sagot :

Themathexpertiseidn

Answer:

See below

Step-by-step explanation:

Question 2:

A relation is a function if every different x-value has a y-value. Since this relation has two outputs for x = 4 (1 and 9), it is NOT a function.

Question 3:

Plug the three points listed (-1, 0, 1) into the function and get their outputs. This will be the range.

f(x) = 2x + 4

Plug in -1.

f(-1) = 2(-1) + 4

f(-1) = -2 + 4

f(-1) = 2

f(x) = 2x + 4

Plug in 0.

f(0) = 2(0) + 4

f(0) = 4

f(x) = 2x + 4

Plug in 1.

f(1) = 2(1) + 4

f(1) = 2 + 4

f(1) = 6

This makes the range {2, 4, 6}.

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