STAAR review

Algebra EOC review

Systems of Equations

Desmos: convert to slope intercept form and graph. The intersection is the solution.

TI-Nspire: "Add calculator" Menu+3+2+enter

Multiple Choice

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Inequalities

• must be in slope intercept form

• if you divide by a negative, the symbol flip flops

•  $\le$  and $\ge$  are solid lines

•  $<$  and $>$  are dashed lines

•  $>$  and $\ge$  means  y axis is shaded above the line

•  $<$  and $\le$  means y axis is shaded below the line

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Multiple Choice

Plug the ordered pairs into the inequality to find the true statement.

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Multiple Choice

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Point Slope Form

• y-y₁=m(x-x₁)

• m is the slope of the line

• The points of the equation are opposite of what the equation gives you.

• The point must be on the line

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Parallel and Perpendicular Equations

• Parallel slopes are the same

• Perpendicular slopes are opposite reciprocals

• Eliminate answer choices.

• Graph the equations

Multiple Choice

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Multiple Choice

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Slopes from Ordered Pairs

• Plug points into table

• Desmos y₁~mx₁+b

• TI-Npire: List and spreadsheets (Show linear)

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Fill in the Blanks

Multiple Choice

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Multiple Select

What are names for x intercept

• zero

• solutions

• roots

• y-intercept

Multiple Choice

How do you graph the linear function g(x)=2f(x)+3?

• $y=2x+3$

• $y=2f\left(x\right)+3$
  

Multiple Choice

How do you graph the quadratic function:

g(x)=f(x)+8

• $y=x+8$

• $y=x^2+8$

Multiple Choice

How do you graph the quadratic function

g(x)=f(x+2)-4

• $y=(x+2)-4$
  

• $y=f(x+2)-4$
  

• $y=\left(x+2\right)^2-4$
  

• $y=\left(x^2+2\right)-4$

Multiple Choice

What kind of equation is this?

f(x)=6x+8

• quadratic

• exponential

• linear

Multiple Choice

 $f\left(x\right)=3x^2+4x-8$  What kind of equation is this?

• exponential

• quadratic

• linear

Multiple Choice

 $f\left(x\right)=800\left(1.25\right)^x$  What kind of equation is this?

• linear

• exponential

• quadratic

Undefined and Zero Slope equations

• y=4 is a zero slope equation and crosses the y axis at 3

• x=7 is a undefined slope equation and crosses the x axis at 7

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