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paytoncollette

Solving Systems of Linear Equations Using Graphing - 0 views

hotmath.com/...-equations-using-graphing.html

solving using graphs

shared by paytoncollette on 05 Jan 15 - No Cached
  • The lines intersect at zero points. (The lines are parallel.)
  • The lines intersect at exactly one point. (Most cases.)
  • The lines intersect at infinitely many points. (The two equations represent the same line.)
  • ...2 more annotations...
  • This method is useful when you just need a rough answer, or you're pretty sure the intersection happens at integer coordinates. Just graph the two lines, and see where they intersect!
  • Example: Solve the system by graphing. y = 0.5x + 2 y = –2x – 3
  • paytoncollette on 05 Jan 15
     
    This website teaches you when to use a certain method and how to solve linear equations using graphs
paytoncollette

Algebra I Recipe: Quick Graphs Using Slope-Intercept Form - 0 views

www.algebralab.org/...studyaid.aspx

quick graphs using slope intercept

shared by paytoncollette on 05 Jan 15 - No Cached
  • Linear Equation is y = mx + b
  • "m" represents the slope. "b" represents the y-intercept.
  • . How to Graph Using y = mx + b Solve the equation for y. Determine the slope and y-intercept. Graph the y-intercept. Use the movements of slope (or rise/run) to graph more points begainning at the y-intercept. Connect the points with a straight line and arrows on each end. Label the line with its equation.
  • paytoncollette on 05 Jan 15
     
    What these annotations represent are when to using slope intercept when graphing and when not to
chrissyschultz

Use inverse operations to solve equations - for teachers | LearnZillion - 0 views

learnzillion.com/...-operations-to-solve-equations

shared by chrissyschultz on 03 Jan 15 - No Cached
  • In this lesson you will learn how to solve equations by using inverse operations
  • Solving linear equations with no solutions and with infinite solutions, using inverse operations, the distributive property, including equations with variables on both sides
  • chrissyschultz on 03 Jan 15
     
    Inverse operations 
chrissyschultz

Solving Multi-Step Equations - 0 views

www.montereyinstitute.org/...U10_L1_T2_text_final.html

shared by chrissyschultz on 03 Jan 15 - No Cached
  • Use properties of equality together to isolate variables and solve algebraic equations.
  • Subtract 2 from both sides of the equation to get the term with the variable by itself.
  • Problem Solve 3y + 2 = 11.
  • ...3 more annotations...
  • Use the properties of equality and the distributive property to solve equations containing parentheses, fractions, and/or decimals.
  • Divide both sides of the equation by 3 to get a coefficient of 1 for the variable.
  • Answer y = 3
  • chrissyschultz on 03 Jan 15
     
    Multi-step equations
chrissyschultz

Cool math Pre-Algebra Help Lessons: Properties - The Distributive Property - 0 views

coolmath.com/...properties-distributive-01.htm

shared by chrissyschultz on 03 Jan 15 - No Cached
  • The distributive property is telling us how to deal with those parenthesis when we just have letters inside
  • chrissyschultz on 03 Jan 15
     
    Distributive Property
paytoncollette

Slope and Rate of Change - 0 views

www.algebra-class.com/rate-of-change.html

rate of change

shared by paytoncollette on 05 Jan 15 - No Cached
  • The slope of a line tells us how something changes over time. If we find the slope we can find the rate of change over that period.
  • e was saving per month. This is called the rate of change per month.
  • John may want to analyze his finances a little more and figure out about how much h
  • ...1 more annotation...
  • We can't count the rise over the run like we did in the calculating slope lesson because our units on the x and y axis are not the same. In most real life problems, your units will not be the same on the x and y axis. So, we need another method!
tdagan

Lines - Cool math Algebra Help Lessons - Finding the Equation of a Line Given a Point a... - 1 views

coolmath.com/...uation-line-point-slope-01.htm

shared by tdagan on 23 Dec 14 - No Cached
  • t's called the point-slope formula (Duh!)
  • You are going to use this a LOT!
  • tdagan on 23 Dec 14
     
    Finding equation of a line with given point
paytoncollette

Slope and Rate of Change - 0 views

www.regentsprep.org/...Rate.htm

shared by paytoncollette on 23 Dec 14 - No Cached
  • The word slope (gradient, incline, pitch) is used to describe the
  • measurement of the steepness of a straight line.
  • paytoncollette on 23 Dec 14
     
    slope/rate of change
andreakercado

Point-Slope Equation of a Line - 0 views

www.mathsisfun.com/...line-equation-point-slope.html

shared by andreakercado on 23 Dec 14 - No Cached
  • The "point-slope" form of the equation of a straight line is:
  • y - y1 = m(x - x1)
  • Using this formula, when we know: one point on the line and the slope of the line,
  • ...1 more annotation...
  • So this is the slope: and we can rearrange it like this:   to get this:  
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