Algebra 1 Mathnation Chapter 5

What is the y-intercept of this line?
y=2x+1

• -2

• 1/2

• 2

• 1

What is the first step in graphing this line?
y=2x+1

• Draw a dot at 1 on the y-axis

• Draw a dot at 1 on the x-axis

• Draw a dot at the origin

• Draw a dot on 2 on the x-axis

Graph the line.
y=-2

• A

• B

• C

• D

Write the equation in standard form.
1/2x+3y=6

• x+6y=12

• It is in standard form.

• 2x+12y=24

• 3y+1/2x-6=0

Write the equation in standard form.
4-2x-y=0

• -2x-y=-4

• 2x-y=-4

• -2x+y=4

• 2x+y=4

Write the equation for the nth term in the arithmetic sequence.
1, 4, 7, 10, 13, 16, ...

• 1+3n-3

• -2+3n

• 1+(n-1)3

• 4-3n

Write the equation for the nth term of the sequence.
21, 19, 17, 15, 13, ...

• 23-2n

• 23+2n

• 25-2n

• 21+2n

What is the formula for slope?

• (x₂-x₁)/(y₂-y₁)

• (y₂-y₁)/(x₂-x₁)

What is the slope of this line?
y=-3

• 0

• undefined

• positive

• negative

Write an algebraic expression for "the sum of z and 2".

• 2z

• z - 2

• z ÷ 2

• z + 2