Exam 3: Graphing Linear Equations

Solve the problem. -When making a telephone call using a calling card, a call lasting 3 minutes costs $1.25. A call lasting 12 minutes costs $3.50. Let y be the cost of making a call lasting x minutes using a calling Card. Write a linear equation that models the cost of making a call (y) lasting x minutes.

Find the slope of a line that has the given relationship to the given line. If the slope is undefined, state this. -Parallel to x = 3

Determine whether the two given lines are perpendicular. -y + 13 = -4x 6y = 18x - 17

Solve the problem. -A gas station sells 4820 gallons of regular unleaded gasoline on a day when they charge $1.35 per gallon, whereas they sell 3893 gallons on a day that they charge $1.40 per gallon. Find a linear Equation for gallons sold (y) at a price x.

Determine whether the given lines are parallel, perpendicular, or neither. -12x + 4y = 16 15x + 5y = 22

Find the equation of a line with the given slope and y-intercept. -Slope $\frac { 7 } { 2 } , y$ -intercept $( 0 , - 5 )$

Determine whether the given lines are parallel, perpendicular, or neither. -3x - 8y = -7 32x + 12y = -4

Determine whether the two given lines are perpendicular. - $- 3 x + y = 17$

Determine whether the given lines are parallel, perpendicular, or neither. - y=9x-7 y=-x+5

Determine whether the two given lines are perpendicular. -x = -7 y = -3

Determine whether the lines associated with the functions are parallel, perpendicular, or neither. -f(x) = x - 6 f(x) = -x

Solve the problem. -Create a linear function whose graph has a slope of 0 and a y-intercept at (0, 5).

Find the equation of the line with the given slope and y -intercept. -Slope -3; y-intercept (0, -9)

Determine whether the given lines are parallel, perpendicular, or neither. -x = 7 y = -3

Provide an appropriate response. -Find the equation of a line that is perpendicular to $5 x + 8 y = 11$ and has a $y$ -intercept at $( 0 , - 9 )$ .

Solve the problem. -Surveyors use the "link" as a unit of measure. To convert links to inches, multiply the number of links by 7.92. Create a function, $\mathrm { f } ( \mathrm { x } )$ , that converts $x$ links to inches.

Find the equation of a line with the given slope and y-intercept. -Slope 0, y-intercept (0, 4)

Provide an appropriate response. -Find a linear function f(x) with slope 0 such that f(2)= -9.

Write the equation in slope-intercept form. - $7 x - 5 y = 0$

Find the slope of a line that has the given relationship to the given line. If the slope is undefined, state this. -Parallel to 5x + 4y = 3