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Strike441 [17]
4 years ago
9

Points A and B lie on the graph of the equation y = 7x.

Mathematics
2 answers:
Montano1993 [528]4 years ago
8 0
Y=7x

A:
x=-2,

y = 7(-2)
y = -14, so the point is <u>(-2,-14)
</u>

B:
x=4,

y = 7(4)
y = 28, so the point is <u>(4,28)</u>
natka813 [3]4 years ago
7 0
The\ coordinates\ any\ points:P(x;\ y)\\----------------\\y=7x\\\\A(\underbrace{-2}_x};y)\\\\put\ x=-2\ to\ equation:\\\\y=7\times(-2)=-14\\\\therefore:\boxed{A(-2;-14)}\\\\B(\underbrace{4}_x;\ y)\\\\put\ x=4\ to\ equation:\\\\y=7\times4=28\\\\therefore:\boxed{B(4;\ 28)}
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Has an x-intercept of (4,0) and a y- intercept of (0,-2)
Mazyrski [523]

Just to be different we'll start with intercept intercept form which says the line through x intercept (a,0) and y intercept (0,b) is

\dfrac x a + \dfrac y b = 1

Through (4,0) and (0,-2) that's

\dfrac{x}{4} + \dfrac{y}{-2} = 1

Multiply through by the common denominator of 4 for standard form:

x - 2y = 4

For slope intercept form we solve for y

-2 y = -x + 4

y = (1/2) x - 2

We see our slope is (1/2) and we go through (4,0) so point slope form is

y - 0 = (1/2)(x - 4)

y = (1/2)(x-4)

5 0
3 years ago
Evaluate the expression for y = -7.<br><br> 2y = __
vivado [14]

Answer:

2y=-14

Step-by-step explanation:

If y=-7 and you multiply y by 2, you do the same thing to both sides and get -7 × 2 = -14

5 0
3 years ago
Select the correct answer.
faltersainse [42]

Answer:

the answer to your question is C. 436.75 meters

4 0
3 years ago
S Explain how knowing 50 times 4 =200 helps you find 500 times 400.
Lemur [1.5K]
This is an easy way to solve multiplication with alot of zero's
Add only the numbers, then add the sum of the zeros
So with this problem we do this:-
5*4 is 20, plus the zero in the 50, so the answer is 200
Now we can do the other one:-

5*4 is 20, plus the 4 zeros that we removed is 200,000

Hope I helped. :)
3 0
3 years ago
-0.111c + 1 = 0.889c
Elena-2011 [213]

Answer:

-0.111c + 1 = 0.889c = c=1

Subtract 0.889c from both sides:

−0.111c+1−0.889c=0.889c−0.889c

−c+1=0

Subtract 1 from both sides.:

−c+1−1=0−1

−c=−1

Divide both sides by -1.:

-c/1 = -1/-1

Therefore, your answer is c=1

7 0
4 years ago
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