Suitable for Grades: 8th Grade, IM 1
CCSS: 8.F.B.4, HSS.ID.C.7
CCSS Description: Construct a function to model a linear relationship between two quantities. Determine the rate of change and initial value of the function from a description of a relationship or from two (x, y) values, including reading these from a table or from a graph. Interpret the rate of change and initial value of a linear function in terms of the situation it models, and in terms of its graph or a table of values.
Interpret the slope (rate of change) and the intercept (constant term) of a linear model in the context of the data.
Throughout this worksheet students will focus on calculating slope of line segments connecting two points. The questions begin with points shown on the coordinate grids, progressing to coordinates of the points provided with and without blank coordinate grids.
The straight lines have both positive and negative slopes, five of which are fractional.
Now students are ready to find the equations of straight lines, see our worksheet Finding the Equation of the Line (C).