Last lesson quiz

In which of the following equations do you have to restrict the domain? (Bonus question: what is the domain? Bonus-bonus question: can you solve them?)

•  $\log_5\left(x+9\right)=-2$  

•  $\sqrt{x-4}=x+2$  

•  $3x=\frac{27}{2x}$  

•  $5+x^2=2x$  

•  $7^x=49^x+2$  

If the question asks for a probability, the answer can be...

• a number between 0 and 1

• a percentage

• a proper fraction

• a factorial

• (n choose k)

Which notations you shouldn't forget?

• Degree sign of angles, e.g. 30°

• Vectors: underline or arrow above the endpoints $\overrightarrow{AB}$

• Correct measurement, e.g. area in cm² (not cm³)

Which is connected to x?

• abscissa

• domain

• zero point = x-intercept

• place / location / at...

Which is connected to y?

• ordinate

• range

• b in y=mx+b

• value

Which definitions can you find in page 55 of the white függvénytábla?

• median - súlyvonal, centroid - súlypont

• midline - középvonal

• perpendicular bisector - oldalfelező merőleges

• circumcircle - körülírt kör

• altitude/height - magasságvonal, orthocenter - magasságpont

Which definitions can you find in page 56 of the white függvénytábla?

• trapezium / trapezoid - trapéz

• kite + arrowhead = deltoid

• parallelogram - paralelogramma

• rectangle - téglalap

What will you pay attention to?

• Detail your calculations

• Check every solution in the original text or equation

• Check the rounding and the measurements

• Give a full sentence answer

• WRITE EVERYWHERE AND DON'T CROSS OUT ANYTHING