91Ó°ÊÓ

Find the \(x\) - and \(y\) -intercepts for each line and use them to graph the line. $$y=\frac{1}{3} x+10$$

Determine whether the lines \(l_{1}\) and \(l_{2}\) are parallel, perpendicular, or neither. \(l_{1}\) goes through \((-2,-3)\) and \((4,1), l_{2}\) goes through \((-1,7)\) and \((1,4)\)

Graph each equation on a graphing calculator using a window that shows both intercepts. Then use the appropriate feature of your calculator to find the intercepts. $$y=2-3 x$$

Find an equation of the line that goes through the given point and has the given slope. Give the answer in slope-intercept form. See Example 5 (-9, -4) with slope 0

Solve each geometric figure problem. If the opposite sides of a quadrilateral are parallel, then it is a parallelogram. Use slope to determine whether the points \((-6,1),(-2,-1),(0,3),\) and \((4,1)\) are the vertices of a parallelogram.

Graph each equation on a graphing calculator using a window that shows both intercepts. Then use the appropriate feature of your calculator to find the intercepts. $$y=800 x+8$$

Find an equation of the line that goes through the given point and has the given slope. Give the answer in slope-intercept form. See Example 5 (-5, 150) with slope -30

Solve each geometric figure problem. A trapezoid is a quadrilateral with one pair of parallel sides. Use slope to determine whether the points \((-3,2)\) \(-(-1,-1),(3,6),\) and \((6,4)\) are the vertices of a trapezoid.

Solve each geometric figure problem. If a triangle has one right angle, then it is a right triangle. Use slope to determine whether the points \((-3,3),(-1,6)\) and \((0,0)\) are the vertices of a right triangle.

Graph each equation on a graphing calculator using a window that shows both intercepts. Then use the appropriate feature of your calculator to find the intercepts. $$y=30.6-3.6 x$$