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Contact [7]
3 years ago
5

Which pair of equations represents parallel lines A.y=2x+7 y=2x-7 B.y=2x-7 y=-1/2-7 C.y=2x+7 y=x+7

Mathematics
1 answer:
DaniilM [7]3 years ago
4 0

y = 2x + 7 and y = 2x - 7 → A

Note that parallel lines have equal slopes

the equation of a line in ' slope- intercept form ' is

y = mx + c → (m is the slope and c the y-intercept)

y = 2x + 7 has m = 2 and y = 2x - 7 has m = 2

The only pair of lines with equal slopes is A


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X + 2y = 8<br> X + 3y = 12
Readme [11.4K]

Answer:

(0,4)

Step-by-step explanation:

Subtract the first equation from the second, obtaining y = 4.  Then substitute 4 for y in the first equation, obtaining x + 2(4) = 8; it follows that x = 0.

The solution is (0,4).

7 0
4 years ago
Which is the best estimate for the average rate of change for the quadratic function graph on the interval 0 ≤ x ≤ 4?
den301095 [7]
ANSWER

A) -1

EXPLANATION

The average rate of change of the given quadratic function on the interval 0 ≤ x ≤4 is the slope of the secant line connecting the points (0,f(0)) and (4,f(4)).

That is the average rate of change is:

= \frac{f(4) - f(0)}{4 - 0}

From the graph, f(0) is 0 and f(4) is -4.

We plug in these values to obtain;

= \frac{ - 4 - 0}{4 - 0}

This simplifies to;

= \frac{ - 4}{4}

= - 1

Hence the average rate of change for the given quadratic function whose graph is shown on 0≤x≤4 is -1
5 0
3 years ago
Read 2 more answers
Help please!! I will mark brainilist and give a lot of points.
julia-pushkina [17]

Answer:

a = 23.588

Step-by-step explanation:

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8 0
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Step-by-step explanation:

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