91Ó°ÊÓ

Write an equation of the line in slope-intercept form. The slope is \(4 ;\) the \(y\) -intercept is \(-6\)

Write an equation of the line that passes through the point and has the given slope. Write the equation in slope-intercept form. $$(0,-5), m=0$$

Draw a scatter plot of the data. State whether x and y have a positive correlation, a negative correlation, or relatively no correlation. If possible, draw a line that closely fits the data and write an equation of the line. $$ \begin{array}{|c|c|} \hline x & y \\ \hline 5.5 & 0.4 \\ \hline 6.2 & 1.0 \\ \hline 7.7 & 2.5 \\ \hline 8.1 & 2.9 \\ \hline 9.2 & 4.3 \\ \hline 9.7 & 5.5 \\ \hline \end{array} $$

Write an equation of the line in point-slope form that passes through the given point and has the given slope. $$ (-3,10), m=4 $$

Use the data on bottled water consumption per person. $$ \begin{array}{|c|c|}\hline \text { Year } & \text { Water(in gallons) } \\\\\hline 1980 & 2.4 \\\\\hline 1985 & 4.5 \\\\\hline 1990 & 8.0 \\\\\hline 1995 & 11.6 \\\\\hline\end{array} $$ Use your model to estimate the consumption of bottled water in the given year. Tell whether you use linear interpolation or linear extrapolation. $$ 2010 $$

Write an equation of the line that is parallel to the given line and passes through the point. $$y=\frac{1}{2} x+8,(-6,4)$$

Suppose that bike rentals cost \(\$ 4\) plus \(\$ 1.50\) per hour. Write an equation to model the total cost \(y\) of renting a bike for \(x\) hours.

Write the equation in standard form with integer coefficients. $$y=-2+\frac{3}{2} x$$

Write an equation in slope-intercept form of the line that passes through the points. $$ (-1,1),(4,5) $$

Suppose that bike rentals cost \(\$ 4\) plus \(\$ 1.50\) per hour. Graph the equation. Label the \(y\) -intercept