Key Functions of a Linear Equation

Solve for y:
3x + y = 12

• y = -3x +12

• x = y + 4

• x = y + 12

• y = 3x -12

Write the equation for the line in slope-intercept form.

• y=-1x+3

• y=4x+3

• y=¼x+3

• y=-4x+3

The graph of y=f(x) is a line in the xy-plane that passes through the point (0, -4) and has a slope of 4. Which of the following equations could define the function f?

• f(x)=-4x+4

• f(x)=4x-4

• f(x)=1/4x-4

• f(x)=1/4x+4

Find the slope of the line.

• 1/2

• -1/2

• 2/1

• -2/1

Which equation in standard form represents this graph?

• -3x +2y = -6

• 3x + 2y = 6

• -3x - 2y= 12

• -3x + 2y = -12

The graph of part of linear function g is shown on the grid.

Which inequality best represents the domain of the part shown?

Tags

A.2A -R

What is the RANGE of this graph?

• -7<x<5

• -7≤y<5

• -3<x<1

• -3≤y<1

Which of the following situations could be descried by the equation y= -25x + 120

• There are 120 people in the football stadium, and 25 more are entering each hour.

• A plumber charges $25 for a house call and $120 per hour.

• A teacher has 120 students. Her third period has 25 students

• There are 120 gallons of water in a tank. It releases water at a rate of 25 gallons per minute

Select the option for the Point-Slope Form equation of a line parallel to y = 4x - 5 going through point (-2, -1).

• y + 1 = 4 (x + 2)

• y - 1 = 4 (x - 2)

• y + 1 = ¼(x + 2)

• y - 1 = -5( x + 2)

Select the option for the Point-Slope Form equation of a line parallel to 2x - 3y = 15 going through point (5, -4).

• y - 5 = ⅔(x + 4)

• y + 4 = -3/2(x - 5)

• y + 4 = ⅔(x - 5)

• y - 4 = -3/2(x +5)