Bell work: A park’s revenue for tapes sold is modeled by the function r(x)=9.5x. The cost of producing the tapes is c(x)=0.8x+1940. Write a function to describe the profit for selling x tapes.

1.3: Graphing Linear Equations

Graph 5x+7y-10=0 using the intercepts

Find the slope of the equation 3x+2y-7=0

Graph the equation y=2x+3

Zeroes of a function A function’s zeroes are the input(s) that produce an output of zero; alternatively, they are points where the functions crosses the x-axis

What does a constant function look like?

Write 5x+3y-23=0 in slope intercept form

1.4/5: Writing Linear Equations

Write the standard form equation of a line with slope=3/4 and y-intercept = 12

Write the slope-intercept form equation of a line with slope=3/4 and y-intercept = 12

A line passes through the points (5, 7), (11, 19), (a, 15), and (22, b). Find a and b

Write the equation of a line with slope -6, passing through the point (5,12)

Write the equation of a line passing through the points (5,6) and (12, 11)

Write the equation of a line with no slope passing through the point (7, 15)

“Write a sentence or two to describe when it’s easier to use point slope form and when it’s easier to use slope intercept form”

Write the equation of a line parallel to y=12x+17 Write the equation of a line perpendicular to y=12x+17

Write the equation of the line parallel to y=12x+17 AND passing through the point (12, 0) Write the equation of the line perpendicular to y=12x+17 AND passing through the point (12, 54)

Determine whether the lines are parallel, perpendicular, or neither 3x-4y=12, 9x-12y=72 15x+12y=36, 5x+4y=12

Section 1.3, page 24: 12-17, 32, 34 Section 1.4, page 30: 11-16, 23 Homework: Section 1.3, page 24: 12-17, 32, 34 Section 1.4, page 30: 11-16, 23 Section 1.5, page 36: 12-14, 22- 27