Write the slope-intercept form of the equation of the line with a slope of -2/5 that passes through the point (15,-9/2 ).
y=-2/5x + 3/2
What form of equations do we use for lines?
y = mx + b or slope intercept form.
Is (2,3) a solution to y=4x-5
No
Write an equation for a vertical line through the point (-3, 3)
x = -3
What is true about the slopes of parallel lines?
They are the same
Write an equation for a line with the following slope and points.
m = 2/3 and (0, -2), (3, 0)
y = 2/3x - 2
Mr. Carr is hiring a plumber to repair his sink. Plumber W charges $97.50 per hour and an additional $26.35 for the parts needed. The cost of plumber T is shown in the table. What is the difference in cost between plumber W and plumber T if the repair takes 5 hours?
Hours | 1 | 2 | 3 |
Cost | 128 | 212.75 | 297.5 |
$46.85
Write an equation for a line with the following two points. Find the slope and y intercept. (15, -10) (5, 10)
slope = -2 y intercept = 20
y = -2x + 20
A fishing shop charges $17.50 to rent fishing gear and $30.25 per hour to rent a boat. Write a function to model the cost C to rent fishing gear and a boat for h hours.
C=30.25h+17.50
The amount y(in dollars) of money you have left after playing x games at a carnival is y = -0.75x + 10. How much money do you have after playing eight games? Graph the equation and show your explanation.
y = -0.75(8) + 10 y = -6 + 10 y = 4 $4 dollars left after playing 8 games. Graph should begin at (0, 10) on the y-axis and move down three and four to the right.