Vocabulary
The number in a linear equation that is not next to a variable.
What is constant?
Identify the slope and y-intercept: y=5x-7
Slope-5
Y-intercept -7
y=9x-4
for x=3
y=23
In order to earn extra money on the weekends, Candice's string quartet performs at wedding receptions. The amount of money they earn depends on the length of the reception.
independent- length of the reception
dependent- amount of money earned
This unknown quantity can "stand" alone and is not reliant upon anything else.
What is independent variable?
Identify the slope and y-intercept: y=-2/5x-9
slope: -2/5
y-intercept -9
y=-3x+6
for x=5
y=-9
The Greene Family Restaurant has several types of hamburgers on their menu. The number of hamburger buns they use each day depends on the number of hamburgers their customers order
independent-number of hamburgers a customer orders
dependent- number of hamburger buns needed
The point where the graph passes through the vertical axis.
What is y-intercept?
slope- 1/5
y-intercept= -5
y=-x-15
for x=-1
y=-14
Zoe is getting ready for a hike. The number of snacks she packs is determined by how many hours she expects to be gone.
independent-# hrs hiking
dependent- how many snacks packs
This is the another name for slope.
What is average rate of change?
Y-int- 0
y=-5/4x-8
for x=-4
y=-3
Ted manages the Putnam Orchard, which produces many different types of fruit, including pears. The number of barrels of pears the orchard will produce depends on the number of pear trees that have been planted in the orchard.
independent- how many pear trees planted
dependent- how many barrels of pears to be produced.