PRACTICE: Alg. I Finals Review

What is the equation for this graph?

• y= 4/5 x + 4

• y= 5/4 x + 4

• y= 4x -5

• y= 5x + 4

Which equation in standard form represents this graph?

• -3x +2y = -6

• 3x + 2y = 6

• -3x - 2y= 12

• -3x + 2y = -12

Write the equation of a line parallel to the one pictured through the point (3,1) in point slope form.
(HINT: PARALLEL LINES HAVE THE SAME SLOPE)

• y - 1 = 1/2(x - 3)
• y + 1 = 1/2(x + 3)
• y - 1 = - 1/2(x - 1)
• y + 1 = - 1/2(x + 3)

Write the equation of a line perpendicular to the one pictured through the point (3,1) in point slope form.
(HINT: PERPENDICULAR LINES - FLIP AND SWITCH)

• y - 1 = 1/2 (x - 3)
• y + 1 = 2 (x + 3)
• y - 1 = - 1/2 (x - 1) 
• y - 1 = - 2 (x - 3)

Write the equation in point-slope form for the line that contains the points
(3, -5) and (5, - 1)

• y - 5 = 2(x + 3)
• y + 5 = 2(x - 3)
• y - 3 = 2(x + 5)
• y + 3 = 2(x - 5)

^{What is the solution?} 

• 1
• -2
• (1, 2)
• (1, -1)

Tags

CCSS.8.EE.C.8B

How many solutions will this system have?

• No Solution
• Infinitely Many Solutions
• No Clue
• One solution

Tags

CCSS.8.EE.C.8A

How many solutions will this system have? 

• No solution
• One Solution
• I Don't Know
• Infinitely Many Solutions

Tags

CCSS.8.EE.C.8B

Solve the following systems of equations using substitution:

y = 3 - x

3y + x = 5

• No solution

• (1, 2)

• (3, 0)

• (2, 1)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

The first step in solving using the substitution method is __________.

• get x by itself
• get y by itself
• get either variable by itself
• add the equations together

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6