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3 years ago

How to find Gradient and y intercept

1 answer:

4 0

Gradient:

Find two points on the line and with those two points, calculate the difference in height(y coordinates) divided by the difference in width(x coordinates). If you get a positive value, then your line will be uphill.

Y-intercept:

Use y=mx+b
Find the slope first using the slope formula which is y2-y1 OVER x2-x1. Once you have that, take a point from the line and substitute the x and y coordinates along with the slope into y=mx+b.

So if your slope was 2/1 and your point was (4,8), it would be:

8=2(4)+b
8=6+b
*subtract 6 from both sides*
b=2

You might be interested in

Simplify –6+{14+2 (60 – 9(1 + 3)]} . Enter your answer in the box.

soldi70 [24.7K]

Answer:

Step-by-step explanation:

Start with the innermost parenthesis 1+3=4, now moving outwards we have -9(4)=-36, we now have 60-36=24, 2(24)=48, 14+48=62, -6+62=56

7 0

3 years ago

Moya records 6.75 minutes of an interview on one tape and 3.75 minutes of the interview on another tape. How long was the total

Blizzard [7]

The interview was 11.3 minutes.

7 0

3 years ago

Finding base. what is 15 miles is 30% of ____ miles

Paladinen [302]

50 miles. 15 is to 30 as 50 is to 100.

3 0

4 years ago

Lin has 4 pinecones and some acorns.

frozen [14]

Answer:

Lin has 11 acorns ⇒ answer D

He subtract 4 from 7 instead of add 4 to 7

Step-by-step explanation:

- Lin has 4 pinecones and some acorns

- She has 7 fewer pinecones than acorns

- The meaning of 7 fewer pinecones than acorns is the number of the

pinecones is less than the number of acorns by 7

∵ She has 4 pinecones

∵ She has 7 fewer pinecones than acorns

- The number of pine cones is less than the number of acorns by 7

∴ 4 = number of acorns - 7

- Add 7 to both sides

∴ 11 = number of acorns

* Lin has 11 acorns

- Tom choose answer A which is 3

- He made a mistake in the equation

- He put ⇒ number of the acorns = 7 - 4 not 7 + 4

∴ number of acorns = 3

* He subtract 4 from 7 instead of add 4 to 7

8 0

4 years ago

The area of a rectangle is 72cm square. Length,/, of the rectangle is 6 cm longer than the width w

Butoxors [25]

As you haven't specifically stated what exactly the question is, I will be assuming that the question is most likely asking for what the dimensions ( length and width ) of the rectangle is. With this in mind, I will be answering the question so here I go...

STEP-BY-STEP SOLUTION:

Let's solve this problem step-by-step.

Let's first establish the formula for the area of a rectangle as displayed below:

Area = Length × Width

A = lw

From this, we will establish the values for each of the parts in the area formula using the information given in the problem as displayed below:

A = 72cm^2

l = w + 6

w = w

Now, we will substitute these values into the area formula and then make ( w ) the subject as displayed below:

A = lw

72 = ( w + 6 ) ( w )

72 = w ( w + 6 )

72 = w^2 + 6w

0 = w^2 + 6w - 72

0 = w^2 + 12w - 6w - 72

0 = w ( w + 12 ) - 6 ( w + 12 )

0 = ( w + 12 ) ( w - 6 )

w + 12 = 0

w = 0 - 12

w = - 12

w - 6 = 0

w = 0 + 6

w = 6

As the answer must be positive as measurements are always positive, the answer must be the option which is a positive number.

Therefore:

w = 6

Using the equation we made for the length before, we can substitute the value of ( w ) to obtain the value of the length as displayed below:

l = w + 6

l = ( 6 ) + 6

l = 12

FINAL ANSWER:

The dimensions of the rectangle are:

Length = 12cm

Width = 6cm

Please mark as brainliest if this was helpful! : )
Thank you <3

7 0

4 years ago