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docker41 [41]
3 years ago
9

What is the x-intercept of y = 5x + 20 A.20 B.5 C.4 D.-4/1 E.-4

Mathematics
2 answers:
rosijanka [135]3 years ago
8 0
I believe the answer is c
Talja [164]3 years ago
6 0

Answer:

Your x-intercept would be E, -4

Step-by-Step

To find the x-intercept, set  y=0.

Our problem:

y=5x+20

0=5x+20

To get the variable term on its own you need to move your 20 over by subtracting it from the right and moving to the left making it -20.

-20=5x

Divide by 5 to get x on its own

-20/5= 5x/5

-4=x

x=-4

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3 years ago
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Doss [256]

Answer:

59.6

Step-by-step explanation:

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antiseptic1488 [7]
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3 years ago
Find the point of intersection (if any) of the following pairs of lines: a) x – 2y +1=0 2x + 3y – 7 = 0 b) x-2y+11=0 -x+2y-13 =
pychu [463]

Answer:

a) (11/7, 9/7)

b) There's no point of intersection

Step-by-step explanation:

a) x - 2y + 1 = 0

2x + 3y - 7 = 0

To find the point of intersection, we need to solve the system of equations  and the result will be the point of intersection (x,y)

x-2y+1=0\\x= 2y-1

Now we substitute x in the second equation:

2x+3y-7=0\\2(2y-1)+3y-7=0\\4y-2+3y-7=0\\7y-9=0\\y=9/7

Now we substitute y in our first equation.

x-2y+1=0\\x-2(9/7)+1=0\\x-18/7+1=0\\x=18/7-1\\x=11/7.

The point of intersection is (11/7, 9/7)

b) x -2y +11 =0

-x + 2y - 13 =0

We are going to follow the same procedure:

x-2y+11=0\\x=2y-11

-(2y-11)+2y-13=0\\-2y+11+2y-13=0\\0y=2\\0=2

Since this system of equations doesn't have a solution, the system has no point of intersection.

5 0
3 years ago
What is an equation in slope-intercept form of the line that passes through (6, −7)
Ber [7]

Answer:

y = -7/6x

Step-by-step explanation:

y - y1 = m*(x-x1)

m=y/x

y - (-7) = -7/6*(x-6)

y + 7 = -7/6x + 7

y = -7/6x + 7 - 7

y = -7/6

4 0
3 years ago
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