Plug In Values

What happens when you substitute and solve?

• The variables disappear and its no solution

• I get a normal x and plug back in for y

• I get a normal y and plug back in for x

• The variables disappear and it's infinite solutions

What happens when you substitute and solve?

• The variables disappear and its no solution

• I get a normal x and plug back in for y

• I get a normal y and plug back in for x

• The variables disappear and it's infinite solutions

What happens when you set them equal and solve?

• The variables disappear and its no solution

• I get a normal x and plug back in for y

• I get a normal y and plug back in for x

• The variables disappear and it's infinite solutions

If f(x) = 2x + 1, what would be your first step to find f(1)?

• Plug a 1 in for all the x's

• Set the function equal to 1

• Only plug a 1 into the left side

• Only plug a 1 into the right side

• I don't know

a symbol for an unknown value; usually a letter (such as a, x, or y) is the symbol used

• constant

• variable

• coefficient

• term

Given that g(x) = 3x + 1, find g(2).

• 6

• 7

• 8

• 9

• 0

Evaluate for f(1)

• 0

• -3

• 3

• 2

• 4

Evaluate for f(-4)

• 1

• 0

• 2

• -2

• 4

What is the value of f(0)?

• -2

• 2

• 4

• 0

• -5

Given that f(x)= 2x² + 5x - 17, find f(-1).

• f(-1) = -20

• f(-1) = -24

• f(-1) = -10

• f(-1) = 0

• f(-1) = 6