Table A has the direct variation, for every 5 degree increase the number increase by 1.25
All the other tables have varying increases/ decreases.
R = √5 ≈ 2.236 ≈ 2.24
2.24 x 2.24 x 3.14 = 15.755264 ≈ 15.8
We have the parabola with equation y = 4x².
We have to determine the shape and direction of it.
If we compare it to the standard equation y = ax² + bx + c, we can see that a = 4, b = 0 and c = 0.
As the value of a is positive, the parabola will open upward.
The parameter has an absolute value greater than 1. This means that y increases "faster" relative to x that a parabola with a = 1.
This means that the parabola will be narrow about its line of symmetry which we call vertical strecth.
Answer:
Because a is positive the parabola opens upward.
Because a has an absolute value larger than 1 the parabola is narrow about its line of symmetry which we call vertical stretch.
Trapezoid and paralellogram are both quadrilaterals
the heiarchy is
quadrilaterals are 4 sided figures
quadrilaterals is split up into
A. no pairs of paralell sides
- kite
B. 1 pair of paralell sides
- trapezoid/trapezium
C. 2 pairs of parell sides (paralellograms)
-rectangles
-rhombus
-square
so you can see that they are both quadrilaterals (quad=4, lateral=sides, quadrilateral=4 sided figure)
