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
NeX [460]
4 years ago
12

What is the equation of the line passing through the points (-1,2) and (-2,-1)

Mathematics
1 answer:
Anna [14]4 years ago
8 0
The equation will be of the form y=ax+b, but we have to find a and b.
If you fill in the first point, you get:

2 = -a + b => b = 2+a

Second point:

-1 = -2a + b

Fill in first into second

-1 = -2a + 2 + a => -3 = -a => a=3

b = 2+a = 2+3 = 5

so the equation is

y=3x+5

Once you have this, it is safe to fill in both coordinates to double-check for mistakes.
You might be interested in
CINDY made costume decorations. She used 1/10 of a meter of ribbon for each decoration which she got by cutting 3/10 of a meter
Brilliant_brown [7]

Answer:

Cindy made 3 decorations with the ribbons

Step-by-step explanation:

Since Cindy used 1/10 of a metre of ribbon to make just one decoration that she obtained by dividing 3/10 of a meter of ribbon into equal parts, then we can calculate the number of decorations that Cindy made. In this scenario, all we need is an idea on how to divide fractions and we are good to go.

If Cindy used 1/10 of a metre obtained by dividing 3/10 of a metre of ribbon to make decorations, then the number of decorations she made can be gotten by dividing 3/10 by 1/10

i.e 3/10 ÷ 1/10

= 3/10 × 10/1

= 3 decorations.

That is she used 1/10 + 1/10 + 1/10 = 3/10 to make (3 decorations).

3 0
3 years ago
Read 2 more answers
Given the speeds of each runner below, determine who runs the fastest.
Lesechka [4]

Answer:

Debbie runs 9 feet per second: 9 ft/s

Jessica runs 1 mile  in 440 seconds: 414/50 ft/s = 207/25 ft/s = 8 7/25 ft/s

jesssica runs 131 feet in 10 seconds: since 1 mile = 5280 ft we have 1/470 mi/s = 5280/470 ft/s = 528/47 ft/s = 11 11/47 ft/s

ron runs 603 feet in 1 minute: 547 ft/min = 603/60 ft/s = 201/20 ft/s = 10 1/20 ft/s

Since:

11 11/47 > 10 1/20 > 9 > 8 7/25

Emily runs the fastest.

7 0
3 years ago
Gerber Product's Gerber Mixed Cereal for Baby contains, in each serving, 60 calories and 11 grams of carbohydrates.† Gerber Mang
jeka57 [31]

Answer:

2 servings of Gerber Mixed Cereal for Baby and 3 servings of Gerber Mango Tropical Fruit Dessert should be used.

Step-by-step explanation:

Given that Gerber Product's Gerber Mixed Cereal for Baby contains, in each serving, 60 calories and 11 grams of carbohydrates, while Gerber Mango Tropical Fruit Dessert contains, in each serving, 80 calories and 21 grams of carbohydrates, and you want to provide your child with 340 calories and 75 grams of carbohydrates, in order to how many servings of each you should use, the following calculation has to be made:

(80 x 5) + (60 x 0) --- (21 x 5) + (11 x 0) = 400 --- 105

(80 x 4) + (60 x 1) --- (21 x 4) + (11 x 1) = 380 --- 95

(80 x 3) + (60 x 2) --- (21 x 3) + (11 x 2) = 360 --- 85

(80 x 2) + (60 x 3) --- (21 x 2) + (11 x 3) = 340 --- 75

Therefore, 2 servings of Gerber Mixed Cereal for Baby and 3 servings of Gerber Mango Tropical Fruit Dessert should be used.

4 0
3 years ago
If two halves of two whole 1/2 are added to two whole 1/2 the result is
jekas [21]
1 is the answer hope this helps
8 0
4 years ago
Read 2 more answers
What triangle congruence postulate would you use to prove these triangles are congruent.
masha68 [24]
Ssssssssssssssssssssss
5 0
3 years ago
Read 2 more answers
Other questions:
  • Find a cubic function with the given zeros. -6, 7, -4
    10·1 answer
  • find a set of parametric equations of the line the line pases through the point (2,3,4) and is parallel to the xz-plane and the
    6·1 answer
  • the sum of 4 consecutive even integers is 460. Write an equation that models this situation and find the value of the 4 integers
    11·1 answer
  • What is 6.432to the nerast whole number
    13·2 answers
  • There are 45 male teachers and 75 female teachersin a school. Find the percentage of male teachers, female teachers in the schoo
    12·1 answer
  • Find a polynomial function whose graph passes through ​(6,13),(10,-10) and (0,5)
    11·2 answers
  • Please help me! This is a grade
    15·1 answer
  • How is the derivative of a function related to the slop of the function?
    5·1 answer
  • Solve the expression: 12+18 divided by 3x2=
    10·1 answer
  • Find the value of a $3,000 certificate in 2 years, if the interest rate is 10% compounded annually.
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!