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madreJ [45]
3 years ago
7

Write an equation in point-slope form and slope-intercept form for

Mathematics
1 answer:
Alex787 [66]3 years ago
4 0

Answer: y=2x-1

Step-by-step explanation:

Equation of a line that passes through (a,b) and have slope m is given by :-

(y-b)=m(x-a)   [point slope form]

Given, Point = (4,7)  , m= 2

Equation in point slope form :   (y-7)=2(x-4)

To write in slope intercept form (y=mx+c) , we need to simplify it

y-7= 2x-8\\\\\Rightarrow\ y-2x=-8+7\\\\\Rightarrow\ y-2x=-1\\\\\Rightarrow\ y=2x-1

Hence,  y=2x-1

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What value of a in the equation ax − 4 = 2y would give a line with a slope of 2?
sukhopar [10]

Answer:

a=4

Step-by-step explanation:

ax − 4 = 2y

We need to get the equation is slope intercept form  y= mx+b.

Lets solve for y

Divide each side by 2

a/2 x - 4/2 = 2y/2

a/2 x -2 = y

or y=a/2 x -2

The slope is a/2 and the y intercept is -2

We want a slope of 2  so a/2 =2

a/2=2

Multiply each side by 2

a/2 * 2 =2*2

a =4

3 0
3 years ago
What is the slope of the line that passes through the pair of points? (1, 7), (10, 1)
Pepsi [2]
(1-7)/(10-1)
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answer is <span>A. –2/3 </span>
7 0
3 years ago
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After three weeks, he has gone from 20 free throws to 26. By what percent has he increased his score?
Alika [10]

Answer:

By 30%

Step-by-step explanation

He has improved by 6 free throws. He used to score 20 points from free throws(Im assuming this is basketball) He scores 6 more in three weeks.

6/20 = 30/100=30 percent.

Check:

30% of 20  = 6

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4 0
3 years ago
This is middle school math btw, not college.
Alisiya [41]

Answer:

Step-by-step explanation:

0,5

7 0
3 years ago
A fair coin was flipped 50 times. It landed on heads 29 times.
faust18 [17]

Answer:

21/50, 42%

Step-by-step explanation:

The total times the coin was flipped is 50 and the number of times it landed on tails is 50-29=21. So we need to divide 21 by 50, which gives us 42%.

7 0
3 years ago
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