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zhenek [66]
3 years ago
10

What is the equation of a line that passes through (7,8) and has a slope of -3

Mathematics
2 answers:
WINSTONCH [101]3 years ago
7 0
You use y=mx+b, then substitute -3 for the slope (m) and 7 for x and 8 for y, after you substitute all those things - use that equation to solve for the b-term - that will give you the y-intercept. Then you will rewrite the equation of the line as y=-3x+(whatever you just found for b). 
Komok [63]3 years ago
3 0
It is helpful to first plug this in to point-slope form (note that there are other ways to do this).

Using the form y-y_1 = m(x-x_1), you get y-8=-3(x-7). You can simplify this to get y = -3x+29.

Answer choice A
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33 34 and 35 please help
Kryger [21]

first you have to find the triangle, then you can move to the actual question.

x+30+80 = 180

x+110 = 180

x+110 - 110 = 180-110

x =70

now you can go to the actual question.

y + 70 = 180

y+70- 70 = 180-70

y = 110

there is your answer. hope this is helpful

7 0
3 years ago
Congruent angle pairs : Find value of x
Alexandra [31]

Answer:

(Opt.B) 18

Step-by-step explanation:

4x = 2y - x (vertically opposite angles are equal)

4x + x = 2y

5x = 2y ----- (1)

4x + 2y + x = 180 (Linear pair angles)

5x + 2y = 180

From (1) we can understand that, the value of 5x and 2y is the same. So,

5x + 5x = 180

10x = 180

x = 180/10

x = 18

Just completing,

Putting the value of x in (1)

5*18 = 2y

90 = 2y

90/2 = y

45 = y

Hope you understand

Please mark as brainliest

Thank You

6 0
3 years ago
Find the missing side length. If necessary, round to the nearest tenth.
Sphinxa [80]

Answer:

25

Step-by-step explanation:

Let's call the missing side (the hypotenuse) c.

c² = 7²+24² (according to the pythagorean theorem)

c= \sqrt{625}

c=25



7 0
3 years ago
Write 19/24 as a decimal rounded to the nearest tenth
sweet-ann [11.9K]
The decimal is: 0.791666667<span>The rounded decimal is: 0.8</span>
5 0
3 years ago
Read 2 more answers
What is an equation for the line that passes through the points (-2,3) and (2,1)?
Nastasia [14]

Answer:

y = -1/2x + 2

Step-by-step explanation:

3 0
2 years ago
Read 2 more answers
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