Algebra 1 EOU 4 Final Exam Review

A.5(C)

• A

• B

• C

• D

Answer explanation

Type both into Desmos. Use trick for standard form.

The lines are directly on top of each other so Infinitely many solutions (AKA all real numbers).

Tags

CCSS.8.EE.C.8B

A.5(C)

• A

• B

• C

• D

Answer explanation

x = coffee, y = donuts

First equation: 1 coffee + 2 donuts = $4.90

1x+2y=4.90

Second equation: 2 coffees + 3 donuts = $8.60

2x+3y=8.60

Both in standard form so use MATRIX (yellow calculator).

It asks for coffee, so choose the x value = 2.5

Tags

CCSS.8.EE.C.8C

A.5(C)

• A

• B

• C

• D

Answer explanation

Both in standard form, so use MATRIX (yellow calculator)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

A.5(C)

• A

• B

• C

• D

Answer explanation

This is like the coffee/donuts question.

15 clicks on website #1 + 29 clicks on website #2 = $94.15

25 clicks on website #1 + 29 clicks on website #2 = $121.15

x=website #1

y=website #2

15x+29y=94.15

25x+29y=121.15

Use MATRIX. It asks for website #1 which is x (top number

Tags

CCSS.6.RP.A.3B

A.5(C)

• A

• B

• C

• D

Answer explanation

This is like the coffee/donut question.

x = morning route

y = afternoon route

16x+12y=141

10x+15y=123.75

Both in standard form so use MATRIX.

It asks for morning route (x value).

Tags

CCSS.8.EE.C.8C

A.8(A)

• A

• B

• C

• D

Answer explanation

Type the left side on one line in Desmos, right side on another line.

Click the point where they intersect -- it's always the X value

Tags

CCSS.HSA-REI.B.4B

A.8(A)

• A

• B

• C

• D

Answer explanation

type each side on different lines in Desmos click the points where they intersect, type the answers and see what matches

Tags

CCSS.HSA-REI.B.4B

A.8(A)

• A

• B

• C

• D

Answer explanation

type each side on different lines in desmos

click the point of intersection and match with answers

Tags

CCSS.HSA-REI.B.4B

a.8(a)

• A

• B

• C

• D

Answer explanation

Type g(x)= equations first. Click the points where they intersect. The solutions are the x-values.

Use calculator to convert fraction answer choices to decimals.

Tags

CCSS.HSA-REI.B.4B

A.10(A)

• F

• G

• H

• J

Answer explanation

combine like terms

Tags

CCSS.HSA.APR.A.1