A linear equation is an equation for a straight line which can be written as ax + by = c, where a, b, and c are real numbers. This is called the standard form of the equation and can be represented on a graph, where in a coordinate plane, the straight line cuts both x- and y-axis. The point where the line cuts the x-axis is called the x-intercept while the point where the line cuts the y-axis is called the y-intercept. A linear equation represents a function, called a linear function. A linear function can be written as f(x)=mx+b, where m and b are real numbers. Through examples, you'll see how the constants m and b affect the graph of the function.
*These practice questions are only helpful when you work on them offline on a piece of paper and then use the solution steps function to check your answer.
Lecture Slides are screen-captured images of important points in the lecture. Students can download and print out these lecture slide images to do practice problems as well as take notes while watching the lecture.