A2: Graphing Linear Functions

y = 1/2x - 1

• slope: 1/2   y-intercept:  -1 
• slope: 2/1   y-intercept:  -1
• slope: 3   y-intercept:  -3 
• slope: 2  y-intercept:  5 

Y-intercept is where the line ______________.

• begins
• crosses the x-axis 
• crosses the y-axis 
• ends

Which of these represents standard form?

• y - y₁ = m(x-x₁)
• Ax + By = C
• y = mx + b

Solve for y:
y + 2 = 3x

• y = 2x + 3
• y= 3x +2
• y= 3x -2
• y= 6x

Find the value of y when x = 2.

• 2
• 6
• 7
• 8

^{What is the x- intercept of the line?}

• (1, 0)
• (2, 0)
• ( -1, 0)
• (-2, 0)

What is the y-intercept?

• (0,7)
• (0, 0)
• (0,1)
• (0, 2)

Which ordered pair could represent a y-intercept on a graph?

• (6, 0)
• (0, 4)
• (-1, 3)
• (2, 0)

Which graph shows a line with a y-intercept of (0, -6)

• 
• 
• 
• 

Which equation best represents the line on the graph?

• y= 1/2x
• y= -1/2x
• y = 2x
• y = -2x