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Recap: f(x)

Part of the Graphs & Systems section of Coddy's Algebra journey. Lesson 38 of 61.

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Challenge

Medium

For h(x)=4−3xh\left(x\right) = 4-3x, find the input with h(x)=−8h\left(x\right) = -8.

Try it yourself

h(x)=−8h\left(x\right) = -8

Get xx alone

Givenh(x)=4−3xh\left(x\right) = 4-3x

All lessons in Graphs & Systems

1Points and Rules

Two Numbers, One PointA Rule Makes PointsThe Points Line Up

4Slope-Intercept Form

y = mx + bThe Starting HeightWrite the EquationSolve for yDraw From Any FormRecap: y = mx + b

7Parallel & Perpendicular

Same Slope, Never MeetThe Perpendicular SlopeA Right-Angle LineRecap: Two Relations

10Systems by Graphing

Two Lines, One AnswerSolve by DrawingCheck the CrossingWhen Lines Never CrossRecap: By Graphing

2The Whole Plane

The Four QuadrantsMirror PointsOn the Line or Not?Recap: Rule to Line

5Point-Slope Form

A Point and a SlopeFrom Two PointsFlat or Vertical ThroughDraw From a PointRecap: Point-Slope

8Function Notation

The Name of a RuleInputs With SignsFind the InputThe Graph of fRecap: f(x)

11Solving Systems Exactly

SubstitutionIsolate FirstEliminationScale, Then AddThree UnknownsTwo Numbers, Two FactsRecap: Two Methods

3Slope

Steepness as a NumberSlope From Two PointsDownhill LinesFlat and Straight UpA Fraction of a SlopeRecap: Slope

6Standard Form

Ax + By = CThe Two InterceptsDraw by InterceptsBetween the FormsRecap: Standard Form

9Shaded Regions

A Line Splits the PlaneSolid or DashedTest a PointRearrange, Then ShadeRecap: Half-PlanesTwo Shadings OverlapThe Corner of a Region

12Final Challenges

Final: Round TripFinal: Where They MeetFinal: Draw the FenceFinal: The Whole PlaneProject lesson