1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Nat2105 [25]
2 years ago
13

Help I need a equation

Mathematics
1 answer:
yarga [219]2 years ago
5 0

9514 1404 393

Answer:

  a) y = 3x-1

  b) y = x+5

Step-by-step explanation:

a) We notice the x-values change by 1, so the change in the y-value is the slope. -4 -(-7) = 3 is the change between the first two y-values.

The y-intercept is shown by the ordered pair (0, -1). So, the slope-intercept equation is ...

  y = 3x -1

__

b) We note that the change in x is 2 units, as is the change in y. Then the slope of the function is m = 2/2 = 1. The y-intercept (b) can be found from ...

  b = y -mx

  b = 7 -1·2 = 5

Then the slope-intercept equation is ...

  y = x + 5

You might be interested in
Lupita bought 7 pounds of pretzels at a local wholesaler for $16.80. Her friend Charles bought 5 pounds of pretzels at the super
Galina-37 [17]

Answer:

Charly has the better buy

Step-by-step explanation:

The unit cost is

=16.8/7

=$2.4

Her friend Charles bought 5 pounds of pretzels at the supermarket for $12.75

Unit cost

=12.75/5

=$2.55

Charly got the best deal because the unit cost per item is less than that of the friend

3 0
3 years ago
A zookeeper predicted that the weight of a newborn lion would be 2.8 pounds. When the zoo’s lion gave birth, the newborn weighed
Nonamiya [84]

3.5 - 2.8 is 0.7 so the zookeerper was 0.7 pounds off

5 0
3 years ago
Read 2 more answers
Choose the equation that matches the following situation: For a field trip, 24 students rode in cars and the rest filled three b
olchik [2.2K]

Answer:

96 = 24 + 3b

96 students in all, 24 in cars and the rest in 3 buses

8 0
3 years ago
Manny has a garden that is 12 feet long and 9 feet wide. What is the perimeter of
Julli [10]

Answer:

42 ft

Step-by-step explanation:

2(L + W ) = P

2 (12 + 9) = P

2 (21) = P

42 = P

P = 42

4 0
2 years ago
The function A = 15x - x2, where x is the width in yards, gives the area A of a llama pen in square yards. Make a table using 1/
Mnenie [13.5K]

Answer:

The width which gives the greatest area is 7.5 yd

Step-by-step explanation:

This is an application of differential calculus. Given the area as a function of the width, we simply need to differentiate the function with respect to x and equate to zero which yields; 15-2x=0 since the slope of the graph is zero at the turning points. Solving for x yields, x=7.5 which indeed maximizes the area of the pen

6 0
3 years ago
Other questions:
  • A tiger traveled 3.5 km, then turned around and traveled 1,250 m back toward his starting point. How many meters was he from his
    10·2 answers
  • Maggie wants to know how many students in her school enjoy watching sports on TV. She asks all 25 students in her math class and
    5·1 answer
  • Jacqueline and Maria set up bug barns to catch lady bugs. Jacqueline caught ten more than three times the number of lady bugs th
    11·2 answers
  • Let f be the function defined as follows:
    15·1 answer
  • Express the number in scientific notation. 3.26
    10·1 answer
  • PLEASE HELP ME! can someone explain this to me pls?​
    12·1 answer
  • Ico
    6·2 answers
  • HELP ASAP FOR BRAINLIEST
    6·1 answer
  • Ryan and Sheila are preparing to get married. Sheila has a car payment of $297.00 per month, which is 9% of her monthly income.
    12·1 answer
  • Will give brainlyist to whoever can help me or can tell me where to find the answers
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!