91Ó°ÊÓ

Use slopes to solve Exercises \(39-40\). The line passing through \((-1, y)\) and \((1,0)\) is perpendicular to the line joining \((2,3)\) and \((-2,1) .\) Find \(y\).

a. Put the equation in slope-intercept form by solving for \(y .\) b. Identify the slope and the \(y\) -intercept. c. Use the slope and y-intercept to graph the equation. $$2 x+y=3$$

a. Put the equation in slope-intercept form by solving for \(y .\) b. Identify the slope and the \(y\) -intercept. c. Use the slope and y-intercept to graph the equation. $$3 x+y=4$$

Determine whether each ordered pair is a solution of the given equation. $$2 x-5 y=0 \quad(-2,0),(-10,6),(5,0)$$

Use slopes to solve Exercises \(39-40\). The line passing through \((-2, y)\) and \((-4,4)\) is perpendicular to the line passing through \((-1,-2)\) and \((4,-1)\) Find \(y\).

Determine whether each ordered pair is a solution of the given equation. $$x+3 y=0 \quad(0,0),\left(1, \frac{1}{3}\right),\left(2,-\frac{2}{3}\right)$$

a. Put the equation in slope-intercept form by solving for \(y .\) b. Identify the slope and the \(y\) -intercept. c. Use the slope and y-intercept to graph the equation. $$7 x+2 y=14$$

Determine whether each ordered pair is a solution of the given equation. $$x+5 y=0 \quad(0,0),\left(1, \frac{1}{5}\right),\left(2,-\frac{2}{5}\right)$$

a. Put the equation in slope-intercept form by solving for \(y .\) b. Identify the slope and the \(y\) -intercept. c. Use the slope and y-intercept to graph the equation. $$5 x+3 y=15$$

Graph each equation. $$y=4$$