Solving Equations and Evaluating Functions

How would you write y = 2x - 3 in function notation?

• y = 2x-3

• f = 2x - 3

• f(x) = 2x-3

f(x)=4x+5
f(4)=

• 21
• -11
• -31
• 25

If f(x) = 2x² + 5x - 3, evaluate f(-1).

• f(-1) = -6

• f(-1) = 1

• f(-1) = -10

• f(-1) = -1

If h(x) = -5x + 7,

Evaluate h(2).

• -2

• 3

• -18

• -3

Given h(x) = -x²+3x, find h(5). 

• h(5) = 40
• h(5) = -10

f(x) is the same thing as ______.

• y
• x
• input
• an equation

For the function f(x) = -3x + 3 find f(0).

• 0
• -3
• 3
• -1

Evaluate f(2).

• f(2) = 5

• f(2) = 12

• f(2) = 10

• f(2) = 0.5

4 + 7a + 6 - 2a = 45

• a = 5

• a = 8

• a = - 4

• a = 7

Solve the equation:
3(x - 1) = 2x + 9

• x = 12
• no solution
• x = 10
• x = 6