Slope
Y-intercept
Vocabulary
Word Problems
Linear Functions
100
What is the slope in the equation y = -8x + 7
negative 8 or down 8
100
What is the y-intercept from y = -9x + 13
(0, 13)
100
The initial value of a linear function is also called the...
Y-intercept
100
Ismael started with an irrigation pipe 120 feet long. He used the equation L=15s+120 to determine the total length of the pipe as new sections (s) were welded on. What is the slope of the line? What does the slope represent in the context of the problem?
slope: 15 meaning: every time a section is added the pipe gets 15 feet longer
100
write the equation (y+4) = 2(x + 2) in slope-intercept form.
y=2x or y = 2x + 0
200
What is the slope of (2,6) (1,8)
-2 over 1
200
What is the y-intercept from y = 0.5x - 6
(0, -6)
200
How steep a linear function is can be referred to as its...
slope
200
Ricardo is draining his pool for the winter. There are 240 gallons in the pool and it is decreasing at a rate of 20 gallons per hour. Write an equation to represent the relationship between the amount of water in the pool, y, and the number of hours the pool has been draining, x.
y = -20x + 240 (in any order)
200
Find the equation of the line with a point (4,2) and m=5 *use a graph
y=5x-6
300
Find the slope from the following points: (2,4) (3,6) (4,8) (5,10)?
up 2 over 1 or +2
300
Given a line that hits point (-2,5) and it has a slope of -3, Find the y-intercept
b = -1
300
Susan G. Komen is a spokeswoman for what?
Breast Cancer or Cancer (foundation, research, charity)
300
Steven is learning to scuba dive. The equation D=20L+15 represents the depth he can dive in feet, D, based on the number of lessons he has had, L. How deep can Steven dive after he takes 7 lessons?
155 feet
300
Find the equation of the line with a point (-2,1) and m=-4 *use a graph
y=-4x-7
400
Find the slope (-4,-8) (1,3)
up 11 over 5 or 11/5
400
Use a graph: A LINE hits these points (2,3) (3,4) (4,5) (5,6) Find the y-intercept
b=1
400
Write the format we use for linear equations that are said to be in slope-intercept form.
y=mx+b
400
David sells T-shirts. The equation y=15x-520 represents the profit he makes (y) for each t-shirt sold (x). How much did David spend on inventory before he even starts selling his shirts?
520
400
Write the equation of the line from the following points (2,1)(3,2)(4,3)(5,4)
y=x-1
500
Find the slope (-9, 1) (6, 3)
2/15
500
DOUBLE JEOPARDY!!!! A LINE hits the points (-4,6) (-2,5) (0,4) (2,3) Find the y-intercept
What is b=-1/2
500
A function that has a curve is what kind of function?
a non-linear function
500
Alex paints faces at kids' birthday parties to earn extra money. The equation M=2.50f+12 represents the relationship between the money she makes, M, and the number of faces she paints, f. Alex wants to buy a new pair of Uggs that cost $119.50. How many faces does she need to paint?
43 faces
500
Write the equation from the following points (-2,5)(0,3)(2,1)
y=1x+3
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