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3 years ago

If slope =

Mathematics

2 answers:

telo118 [61]3 years ago

4 0

Answer:

y=3x+5

Step-by-step explanation:

use y=mx+b format.

Hope I helped!

posledela3 years ago

3 0

So the formula for slope intercept form is y= mx+b
(M is your slope and b is your y-intercept)

You just substitute the numbers into the equation.

So the equation would be y=3x+5

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gia is thinking of a number which she calls n. She adds 4 to the number and then doubles the sum. Write an expression to represe

Korvikt [17]

It should be 2(n+4)

3 0

3 years ago

Read 2 more answers

What is an equation of the line that passing through the points (-2, -5) and (4, 7) ?

monitta

Answer:

$y=2x-1$

Step-by-step explanation:

Use the slope-intercept formula: $y=mx+b$ where m is slope and b the y-intercept.

$(-2,-5)(4,7)$

Use the slope formula for when you have two points:

$\frac{y(2)-y(1)}{x(2)-x(1)}=\frac{rise}{run}$

Rise over run is the change in the y-axis over the change in the x-axis. Insert values:

$\frac{7-(-5)}{4-(-2)}$

Simplify parentheses (negative+negative=positive)

$\frac{7+5}{4+2}$

Simplify

$\frac{12}{6}=2$

2 is the slope:

$y=2x+b$

Now use one of the points to find the y-intercept by substituting the x and y values into the equation. Solve for b:

(4,7)

$y=2x+b\\7=2(4)+b$

$7=8+b\\7-8=8-8+b\\7-8=b\\-1=b\\b=-1$

The y-intercept is -1. Insert into the equation. Change the + symbol to -:

$y=2x-1$

Done.

6 0

3 years ago

A man buys a certain number of Litchies at 20 per rupee and equal number at 30 per rupee. He

ANTONII [103]

Full question :

A man buys a certain number of oranges at 20 for Rs. 60 and an equal number at 30 for Rs. 60. He mixes them and sells them at 25 for Rs. 60. What is the gain or loss percent?

Answer:

4% loss(percentage loss on cost price)

Step-by-step explanation:

we will be employing algebra in solving this problem :

20 oranges at 60 Rs=60Rs/20 per orange=3Rs per orange

Say x oranges bought at 3Rs per orange=3Rsx

Equal number of oranges at 30 oranges for 60 Rs=60Rs/30 per orange=2Rs per orange

Say x oranges bought at 3Rs per orange=2Rsx

Total Cost Price = 3Rsx + 2Rsx = 5Rsx

He then sells all oranges at 25 for 60 Rs

Therefore price per orange=60/25=12/5Rs

since he sold x+x oranges(from the above calculations)

Total selling price=total oranges *12/5Rs=2x oranges*12/5Rs=24x/5Rs

Profit or loss=24x/5-5x=-x/5

therefore we have a loss =-x/5

Percentage of loss(on cost price)

=x/5÷5x∗100=

=1/25∗100=4%

5 0

3 years ago

Enter numbers in the boxes to write an equation that is equivalent to 3/4b−2/3b=−9

Nana76 [90]

Answer:

3/4b−2/3b=−9 = -108. so, i just used equivalent fractions of both of those numbers :D

Step-by-step explanation:

6/8b - 4/6b = -9

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2 years ago

I need help on this problem!?

nata0808 [166]

156/4=39 miles per gallon. 39*12 gallons is 468 miles, and 6 gallons is 234.

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3 years ago