1. Graphs have a vertical line (y-axis) & a horizontal line (x-axis)
MBM 3C Slope Review
Graphs have a vertical line (y-axis) & a horizontal line (x-axis)
To plot points on the line each point must have an x-coordinate & a y- coordinate (x,y)
To Plot the point (5,-2) on the grid find 5 on the horizontal (x-axis) and rise up -2 on the vertical (y-axis)
To Plot the point (3,6) on the grid find 3 on the horizontal (x-axis) and rise up 6 on the vertical (y-axis)
Join the points with a ruler to make a line.
Does this line have a positive or negative slope?)

2. The steeper the line, the larger the number for the slope.
SLOPE (symbol “m”)
Slope describes the steepness of a line. Think of the slope of a ski hill, a roof or a mountain road.
The steeper the line, the larger the number for the slope.
The formula for slope: A B
rise
run
A(x1,y1) B(x2,y2)
Find the slope between: A (3.4) and B(5,8)

3. From text p96 # 3:. The cost of topsoil is $40 for delivery and
From text p96 # 3: The cost of topsoil is $40 for delivery and $18 per cubic yard of soil.
Let C represent the cost & let v represent the volume of soil.
Table of values: Graph:
V (cubic yards)
C ($) 1 2 3 4 5
Cost
C ($)
Equation:
C=__________________
Volume V (cubic yards)

4. What is the initial cost if topsoil? ________
What part of the graph does this represent? The _________ intercept.
What is the rate of increase of the top soil? _____________
What part of the graph does this represent? The _________.