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3 years ago

7

Determine the coordinates of the y-intercept of the function shown in the graph.

2 answers:

Flura [38]3 years ago

7 0

Ok, i really don't remember this, so i don't want to steer you wrong. maybe wait for another answer?

stiv31 [10]3 years ago

3 0

First let’s find the slope of the line given.
m=y2-y1/x2-x1
m=6-3/-4-(-3)= -3
Now y=mx+b is equation of a line. We just found m so let’s plug in two points from the graph for our (x,y) values

6=-3(-4)+b
Therefore b = -6. So our line equation is y=-3x-6

So now we can find the coordinate point for the y-intercept which is (0,-6)

Hope this helps explain the concept! Any questions please ask!! Thank you!!

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3 years ago

Solve the problem<br> -4p - 4p

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3 years ago

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a line has a slope of 2 and passes through the point of 3,9. wat is the equation of the line in slope intercept form

7nadin3 [17]

The equation for a line that passes through the point of (3, 9) and has a slope of 2 in slope intercept form is y=2x+3

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3 years ago

This net can be folded to make a square pyramid. what is the surface area of the pyramid

givi [52]

Answer:

$85in^2$

Step-by-step explanation:

to find the surface area we need to find the followng areas:

area of the square

area of a triangle and multiply it by 4 (because there are 4 triangles)

And once we have those areas, we add them to find the surface area.

Area of the square:

the formula to find the area of a square is:

$a_{square}=l^2$

where $l$ is the length of the side: $l=5in$

thus the area of the square is:

$a_{square}=(5in)^2$

$a_{square}=25in^2$

Area of the triangles:

the are of 1 triangle is given by

$a_{triangle} =\frac{b*h}{2}$

where $b$ is the base of the triangle: $b=5in$ (the base of the triangle is the side of the square)

and $h$ is the height of the triangle: $h=6in$

thus, the area of 1 triangle is:

$a_{triangle} =\frac{(5in)*(6in)}{2}$

$a_{triangle} =\frac{30in^2}{2}$

$a_{triangle} =15in^2$

the area of the 4 triangles is (we multiply by 4):

$a_{4-triangles}=4(15in^2)$

$a_{4-triangles}=60in^2$

finally we add the area of the square and the area of the 4 triangles to find the total surface area:

$Surface=25in^2+60in^2$

$Surface=85in^2$

8 0

2 years ago

1.3n-0.03=-9 (solve for n) grade lvl. 7

bazaltina [42]

Hello from MrBillDoesMath!

Answer:

-6.9

Discussion:

1.3n - 0.03 = -9 => multiply both sides by 100

130n - 3 = -900 =>

130n = -900 +3 = -897 => add 3 to both sides

n = -897/130 =>

n = - (69 * 13)/ (10*13) =>

n = - 69/10 = - 6.9

Thank you,

MrB

4 0

3 years ago