JS and Graphics Unit Review

How would you store 20 apples in inventory as a JavaScript variable?

• var numApples == 20;

• 20 = numApples;

• var numApples = 20;

• var num apples = 20;

When entering a diameter value in the variable diameter, how can we draw the correct sized circle?

• var circle = new Circle(diameter);

  circle.setPosition(100,100);

  add(circle);

• var circle = new Circle(diameter*2);

  circle.setPosition(100,100);

  add(circle);

• var circle = new Circle(diameter/2);

  circle.setPosition(100,100);

  add(circle);

• var circle = new Circle(diameter%2);

  circle.setPosition(100,100);

  add(circle);

What statement will read a number from a user?

• var appleToBuy = readLine( "How many apples would you like? ");

• var applesToBuy = println( "How many apples would you like? ");

• var applesToBuy = nextInt( "How many apples would you like? ");

• var applesToBuy - readInt( "How many apples would you like? ");

What does the following program do?

var radius = readInt( "What is the radius of the circle? ");

var circle = new Circle(radius);

circle.setPosition(radius, radius);

add(circle);

• Draw a circle on the canvas that is always tangential to the top and left sides of the canvas

• Draws a circle that is positioned in the bottom right corner of the canvas

• Draws a circle on the canvas with the center positioned at the coordinate (0,0)

• Draws a circle to the center of the canvas with size based on user inputted value

When splitting up fruit equally between 3 people, which statement below will calculate how much fruit will be left over?

• var leftOver = 3 % numFruit;

• var leftOver = numFruit % 3;

• var leftOver = 3 / numFruit;

• var leftOver = numFruit / 3;

What is printed to the screen if the user enters '8' when the following program is run?

var userNum = readInt(" Enter your favorite number: ");

var calculatedNum = (userNum * userNum) + userNum;

println(calculated Num);

• 24

• 64

• 72

• 8

In a graphics canvas, what are the coordinates of the bottom right corner of the window?

• 0,0

• 0, getWidth()

• getHeight(), getWidth()

• getWidth(), getHeight()

What is printed to the screen when the following program is run?

var num = 17 % 3;

println(num);

• 1

• 2

• 5

• 6

What are the coordinates of the center of the window?

• getWidth(), getHeight()

• getWidth() /2, getHeight() /2

• getHeight() - getWidth(), getWidth() - getHeight()

• getHeight() /2, getWidth() /2

If you were given the following variables:

var distance = 2;

var time = 30;

What line of code would print the speed in km/hr if the distance is given in km and the time is given in minutes? (speed=distance/time)

• println(distance/(time/60));

• println(distance/time);

• println(distance *(time*60));

• println(distance*time);