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Learn about the slope-intercept form of linear equations with this Khan Academy video.
Learn the basics of algebra and slope-intercept form with Khan Academy's free online educational resources.
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Slope-intercept form (y=mx+b) of linear equations highlights the slope (m) and the y-intercept (b) of a line. Watch this video to learn more about it and see some examples.
Khan Academy
Lesson 5: Reflections. Reflecting points. Reflect points. Determining reflections. Determine reflections. Determining reflections (advanced) Determine reflections (advanced) Reflecting shapes. Reflecting shapes: diagonal line of reflection.
The standard form for linear equations in two variables is Ax+By=C. For example, 2x+3y=5 is a linear equation in standard form. When an equation is given in this form, it's pretty easy to find both intercepts (x and y). This form is also very useful when solving systems of two linear equations.
We use scatter plots to explore the relationship between two quantitative variables, and we use regression to model the relationship and make predictions. This unit explores linear regression and how to assess the strength of linear models.
Estimating equations of lines of best fit, and using them to make predictions. Line of best fit: smoking in 1945. Estimating slope of line of best fit. Equations of trend lines: Phone data. Linear regression review. Math>. Statistics and probability>. Exploring bivariate numerical data>.
Learn the basics of average rate of change in algebra, including its definition and how to calculate it.