Envision Algebra Final

What is the value of x in:
f(4) = 3x - 1

• 11

• 4

• -1

• 0

What does x equal in the function:
f(-11) = 5x + 1

• -54 

• 5

• 1

• -11

Solve for f(5):
f(5) = -x + 4

• 9 

• 1

• -1

• -9

What subject is this?

• Aljebra

• Algabra

• Algebra

• Aljebrajimavich

Solve the system of equations using substitution:

y = 2x - 1

y = x + 1

• (6, 4)

• (2, 3)

• (-2,1)

3 (2x + 3) = 2 (3x + 4)

• 6=6 infinite solutions

• 18≠9 no solution

• 9 ≠ 8 no solution

• x= 6 one solution

4 (x + 4) = 2 (2x +8)

• 8 ≠ 10 no solution

• x = 16

• 4=4 infinite solutions

• 16=16 infinite solutions

Translate into an equation:

One less than 4 times a number is 11

• 1-4n=11

• 4n-11=1

• 1-11=4n

• 4n-1=11

Translate into an equation:

Twice a number decreased by 5 is 7 more than the number.

• 5 - 2n = 7 + n

• 2n - 5 = 7 + n

• 5 - 2n = n +7

Solve: ¾x + 3y = 12

for x when y = 3

• y= 4

• x=6

• x=4

• y= 12