Chisaka has less than 250 kg of food remaining in her spaceship. She needs a constant amount of food each day that she spacewalks, and a constant amount of food each day that she doesn't
spacewalk
Let S represent the number of days Chisaka spacewalks and N represent the number of days she
doesn't spacewalk without running out of food.
4.3S+2.1N<250
1. According to the inequality, how much food does Chisaka need for each day that she does
spacewalk?
2. According to the inequality, how much food does Chisaka need for each day that she doesn't
spacewalk?
3. Can Chisaka spacewalk for 42 days and not spacewalk for 35 days without running out of
food? Explain why? Write the solution.
4. Can Chisaka spacewalk for 48 days and not spacewalk for 55 days without running out of
food? Explain why? Write the solution.
After answering to the previous questions, you should know how to solve next exercises.
I. Is point (6,-2) solution for --4x-5y=32? Why? Show me the steps how are checking?
II. What is the slope of the line through (-4,1) and (-7,-5)? Write the formula and show me the
solution.
III. What is the slope of the line x=-7? Why?
IV. What is the slope of the line y=-6? Why?
V. What will be x and y intercepts for the given equation y=-2x+25? How will you find them?
VI. Write the equation of the line through (-3,8) and (-4,-9) points.