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rewona [7]
3 years ago
5

5 steps of writing the equation of a line

Mathematics
1 answer:
likoan [24]3 years ago
3 0
Step 1: begin by writing the formula for slope intercept form
step2: substitute the given slope for X
step3: use the order pair you given (x,y) and substitute these values for the variables x and y in the equation
step4: solve for y ( y-intercept of the graph)
step5: rewrite the original equation in step 1 substituting the slope for x and the y-intercept for y
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When finding the Slope from two points , how I check my answer makes sense is?
Zinaida [17]
You use the coordinates to plug it into the equation.
3 0
3 years ago
Factorise 3(x+y)^2 -5(x+y) + 2
sammy [17]

Answer:

3x^2+3y^2+6xy-5x-5y+2

Step-by-step explanation:

3(x+y)^2 -5(x+y) + 2

\mathrm{Expand}\:-5\left(x+y\right)+2

-5x-5y+2

\mathrm{Simplify}\:3\left(x+y\right)^2

3\left(x^2+2xy+y^2\right)

3x^2+3\times \:2xy+3y^2

3x^2+6xy+3y^2

=3x^2+3y^2+6xy-5x-5y+2

6 0
4 years ago
Read 2 more answers
A phone company offers two monthly plans. Plan A costs 8 plus an additional 0.16 for each minute of calls. Plan B costs 20 plus
blagie [28]

Answer:

Total time when cost are equal = 600 minutes

Total cost = 104

Step-by-step explanation:

Given:

Plan A = costs 8 plus an additional 0.16 for each minute

Plan B = costs 20 plus an additional 0.14 for each minute

Find:

Total time when cost are equal

Computation:

Assume total time = x minutes

Plan A = 8 + 0.16x

Plan B = 20 + 0.14x

Plan A = Plan B

8 + 0.16x =  20 + 0.14x

0.02x = 12

x = 600 minutes

Total time when cost are equal = 600 minutes

Total cost = 8 + 0.16x

Total cost = 8 + 0.16(600)

Total cost = 104

8 0
3 years ago
a box of cereal states that there are 90 calories in a 3/4-cup serving. How many calories are there in 4 cups of the cereal.
PolarNik [594]

Answer:

480 calories

Step-by-step explanation:

4 ÷ 3/4= 5 1/3 servings

90 x 5 1/3= 480

3 0
3 years ago
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saul85 [17]

Answer:

2x + 3

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
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