Changing Standard Form Equations to Slope-intercept Form
To change a linear equation from standard form to slope- intercept form, solve for y. The procedure is demonstrated several times.
Subject: slope-intercept form
Transcript: THE OTHER. A AND B ARE COEFFICIENTS. THIS EQUATION IS IN STANDARD FORM. TO GET IT INTO SLOPE INTERCEPT FORM, JUST SOLVE THE EQUATION FOR Y. THAT'S EASY
Examples Using Two Points to Write an Equation
Practice writing equations given two points on a line.
Subject: slope
Transcript: NARRATOR: HERE ARE TWO POINTS ON ANOTHER LINE. LET'S USE THE SAME STEPS TO WRITE AN EQUATION. WE'LL FIND THE SLOPE OF THE LINE FIRST. SUBSTITUTE THE
Solving Systems by Graphing
Graphing the solution to a system of slope-intercept form equations.
Subject: slope-intercept form
Transcript: NARRATOR: BOTH EQUATIONS IN THIS SYSTEM ARE IN SLOPE INTERCEPT FORM. WE'LL USE THE FORM TO GRAPH THE EQUATIONS ON THE SAME SET OF AXES. FOR THE
Using Two Points on a Line to Write an Equation
Using the coordinates of two points on a line to write an equation involving the Celsius and Fahrenheit temperature scales.
Subject: slope
Transcript: NARRATOR: UNTIL NOW WE'VE SOLVED PROBLEMS BY WRITING EQUATIONS WHEN WE WERE GIVEN THE SLOPE AND A POINT. SOMETIMES WE WON'T KNOW THE SLOPE. INSTEAD
Using Slope and One Point on a Line to Write an Equation
Writing an equation in slope-intercept form given the slope and a point on the line.
Subject: slope
Transcript: NARRATOR: A LINE WITH A SLOPE OF 3 GOES THROUGH THE POINT 5, 19. SUBSTITUTE 3 FOR M. TO FIND THE Y-INTERCEPT, SUBSTITUTE 5 FOR X AND 19 FOR Y
Using Slope-intercept Form to Graph an Equation
Using the slope-intercept form, the line can be graphed simply by plotting the y-intercept and using that slope to find the second point.
Subject: slope-intercept form
Transcript: NARRATOR: SLOPE INTERCEPT FORM GIVES US A QUICK WAY TO FIND THE SLOPE AND Y-INTERCEPT OF A LINE. IT SAVES TIME AND GRAPHING TOO. WHEN WE HAVE